Graph of basal temperature with hormonal failure. Basal body temperature after delay

After fertilization, all organs and systems of the female body undergo serious changes. Physiological transformations are felt already at the initial stage of pregnancy. key indicator the state of health of the girl at this time is the basal temperature, changes in which may indicate pathologies or abnormalities.

What is basal body temperature

This is an indicator of temperature in conditions of maximum rest of the body. BBT is measured rectally during pregnancy and depends on the hormone progesterone secreted by the female genital organs, the volume of which during monthly cycle changes frequently. By defining basal body temperature you can find out the time of the beginning and end of ovulation (for planning fertilization), as well as detect the onset of pregnancy. BT allows you to find out if there are inflammations or other pathological processes in the female body.

The norm of BT after conception

For a fertilized egg to attach to uterine wall, certain conditions are required. The female body creates a favorable environment for this with the help of progesterone, which is produced in increased volumes during ovulation. With the help of the hormone, the uterus becomes able to accept a fertilized egg and allow the placenta to develop. This explains the increase in BBT by early dates pregnancy. As a rule, the value of the thermometer shows 37-37.3 ° C.

If the basal temperature in the early stages of pregnancy remains within the specified limits, this indicates that the development of the fetus is normal, without complications. In some women, the indicator can deviate up to 38 degrees, which is due to the individual characteristics of the body, however, to make sure that there are no diseases, you should visit a doctor.

Body temperature during early pregnancy should be measured every morning at the same time. This is the only way to be sure of the accuracy of the indicators: no external factors have yet affected the body. After eating, physical exertion (even minimal), experiencing various emotions, the basal temperature undergoes changes. Throughout the day, BT is constantly changing under the influence of these factors, so it is pointless to measure it during the day or in the evening.

Causes of deviation from the norm

Doctors diagnose high basal temperature in early pregnancy and in some other cases. The indicator, for example, can increase with an inflammatory process in the female genitourinary system. To verify the onset of pregnancy, it is necessary to track the duration of the delay in menstruation and conduct a test. After confirmation of fertilization, the doctor advises the girl to periodically monitor BBT so that, if available, pathological processes eliminate them in time.

High basal temperature in pregnant women sometimes indicates the presence of inflammation in the organs reproductive system. Sometimes BBT rises with ectopic pregnancy: despite the abnormal location of the egg, it develops, causing an increased production of progesterone in the body. Signs of deviations in elevated temperature are pain with localization in the lower part of the peritoneum and brownish vaginal discharge.

Possible cause elevated BBT in early pregnancy is an imbalance of hormones that is associated with estrogen secretion. Deficiency of this hormone in the female body can lead to abortion and infertility. A lower basal temperature (below 36.9 ° C) with its subsequent increase also indicates possible pathologies. A low BBT may indicate inflammation of the uterine endometrium.

How to measure basal temperature to determine pregnancy

At early dates and after BT, the sutra is measured before getting out of bed, when female body is in the minimum activity mode. In this case, the thermometer is immersed 2 cm inside anus or vagina and hold there for 3-5 minutes. Procedure rules:

one thermometer cannot be inserted into different holes to avoid infection of the perineum;
it is better to use a mercury thermometer, since electronic devices do not show accurate results;
measurement should be taken at about the same time every day;
carry out the procedure while lying on your back or stomach (before that, it is forbidden to get up, as blood flow to the peritoneum and small pelvis increases);
it is allowed to measure basal temperature in early pregnancy after at least five hours of sleep;
during the control of BT, one should not have sexual intimacy (the period between the act and the time when the temperature can be determined should be at least 12 hours);
it is forbidden to take any drugs;
do not have breakfast before measuring BBT;
The procedure can only be carried out healthy condition(even a slight runny nose can affect the value of the thermometer);
the minimum duration of BBT tracking is 3-4 cycles (more short term does not allow the doctor to draw conclusions about the health of the patient).

BT Record Table Compilation Guide

The basal temperature during early pregnancy helps to timely track the changes taking place in the body. For convenience, women create special schedule, where data on BT is entered. At the same time, the date of temperature measurement, the day of the monthly cycle, the thermometer readings and notes are indicated. The last column may contain factors that could affect BT ( intestinal disorders, stress, bad dream, etc.).

How to make a table for recording BT:

draw two axes (X and Y) on a piece of paper in a cell, while the first one will indicate the day of the cycle, and the second - the BT indicator;
plot the measurement data and connect the points to form a curved line;
draw an overlapping line over the six BBT values in the initial phase of the menstrual cycle preceding ovulation (the first five days of the cycle and days with a controversial BBT indicator are not taken into account);
on the compiled temperature curve, two days after ovulation, draw the corresponding line, highlighting it in a different color.

How to decipher the basal temperature chart during pregnancy

The BT scheme conditionally divides the cycle into 2 parts. The first phase is the part of the schedule before the ovulation mark, the second phase is after it and lasts longer. How long can it last? The best option according to doctors - 2 weeks, but the period from 12 to 16 days is also considered the norm. The duration of the menstrual cycle in different representatives of the weaker sex varies and depends on the duration of the initial phase.

If, in the case of regular measurement of BBT indicators during the first trimester of pregnancy and longer, you notice that the duration of the second phase is less than 10 days, there is a good reason to see a doctor. In addition, it is worth taking into account the difference in the average temperature values during both phases. The basal temperature in early pregnancy should normally differ in the first and second parts of the menstrual cycle by no more than 0.4 ° C. A different difference indicates the presence hormonal imbalance.

Video: what should be the rectal temperature during pregnancy

This is a research technique based on the hyperthermic effect of progesterone on reproductive system. Basal temperature during pregnancy is rectal (oral or vaginal) indicators obtained after a night's sleep in a state of complete rest of the body.

Measurement of BT belongs to the main category of informative tests that determine the performance of the ovaries and reproductive system of a woman.

Unsuccessful attempts to get pregnant for a year or more.
If infertility is suspected in one of the partners.
Signs of hormonal imbalance.
Compliance with the recommendations of the gynecologist when planning pregnancy.
In order to prevent conception, the method accurately determines the "dangerous days".
As an experiment when planning pregnancy with the sex of the unborn child.

Take notes

From the temperature graph, you can find out the following processes.

When the egg matures.
The day of ovulation or its absence.
To identify dysfunctions of the endocrine system.
Determine diseases of a gynecological nature, for example, inflammation of the appendages, hyperprolactinemia, endometritis, lack of hormone production.
The time of the next menstruation.
Whether the pregnancy started with a missed period or unusual bleeding.
Assess how the ovaries secrete hormones relative to different phases MC, is there a shift or not.

An accurate interpretation of the basal temperature chart can only be given by a gynecologist. However, a preliminary assessment can be carried out independently if you know the norm and deviations of the temperature values on the curve.

The rationale for the BT method lies in the analysis of the production of sex hormones, under the influence of which there is a decrease or rise in temperature indicators in different days cycle.

In the first (follicular) phase, there is a surge of estrogen, which causes a decrease in values to a minimum. Normally, when the follicle matures, the temperature should not exceed 37 ° C.

Immediately before the release of the egg, there is a slight decline in performance. Then the temperature gradually rises to its maximum, which means the onset of ovulation.

At this moment, active synthesis of progesterone begins, which causes an increase in indicators to 37.1–37.3 °. Before menstruation, there is again a slight decline in values. During menstruation, the temperature is about 37 ° C.

This is detailed description normal biphasic BBT schedule. Any deviations may indicate violations of the reproductive system or pathology.

How is basal temperature measured?

The correct construction of the BT schedule requires strict adherence to all the recommendations of gynecologists. Any deviation distorts the indicators, which can lead to an ambiguous interpretation by the doctor.

Algorithm of actions when measuring basal temperature at home.

The study is carried out daily, including periods of menstruation, at least 3-4 months.
It is allowed to use any thermometer, digital or conventional thermometer. During the experiment, the device cannot be changed.
To obtain reliable results, the temperature can be measured through the buttocks, vagina or mouth. Preferably rectal. The measurement method remains unchanged.
Night rest should last at least 4-6 hours.
When waking up, you can not get up, move, spin, even shake the thermometer. Therefore, in the evening, put the thermometer on the bedside table in order to measure the temperature in a state of complete rest.
The study is carried out in the morning at the same time. The optimal interval is from 5 to 7 hours. A deviation of plus or minus half an hour is allowed.
The indicators obtained during the day are taken into account if the woman works at night. Sleep for at least 3 hours is a must.
The temperature measurement is carried out for 5 minutes. The values are immediately indicated in the graph.
It is important to write down comments in the notes, which indicate the abundance of bleeding and the impact external factors. For example, drinking alcohol or having sexual intercourse the day before, colds, ailments, abdominal pain, medication, etc.

Example:

basal body temperature chart

What should be the basal temperature after ovulation during pregnancy

The first sign of conception is a delay in menstruation against the background of stable high performance BT, while the decline in values before menstruation does not occur.

A prerequisite is sexual intercourse two days before the onset of ovulation or on the day of egg maturation. Basal temperature during different periods of the menstrual cycle can change under the influence of hormones.

For the beginning of the MC are characteristic normal performance temperatures around 37°C. In the second phase, under the influence of progesterone, BBT will be higher. How to schedule to know that pregnancy has occurred.

Before ovulation, the indicators are slightly lower than normal, and after the release of the egg, the temperature rises sharply.
There may be a discharge that disappears within two days. This is due to damage to the endometrium during the introduction of the zygote into the inner layer uterus.
A similar phenomenon is usually noted on the 7-10th day after ovulation. The graph shows sudden jump low temperature, which is called "implantation retraction".
The difference between the values before and after ovulation is approximately 0.4 - 0.5 ° C.
If the basal temperature continues to remain elevated with a delay in menstruation, then we can talk about successful conception.

The moment of ovulation

When using the IVF method according to the BT schedule, it is difficult to determine pregnancy. Before egg transfer, the patient is prescribed progesterone preparations, which cause an increase in rectal and general indicators.

Basal temperature in the pregnant cycle

Gynecologists, as well as endocrinologists and therapists, recommend keeping a BT schedule for the entire first trimester of gestation. The rules for measuring during pregnancy remain unchanged.

After the fourth month, the control of rectal indicators no longer makes sense. However, during implantation of the egg and up to the 20th week of pregnancy, the temperature should always remain at the level of 37.1-7.3 ° C.

The BT table will show how the woman's condition changes in the early stages of pregnancy, as well as signs possible complications. If the indicators start to jump, that is, the graph shows a sharp decline or an increase in basal temperature, then we can talk about pathology during pregnancy.

BT sinking, that is sharp drop temperatures up to 37 degrees, indicates a lack of progesterone production, which can lead to miscarriage. A woman is prescribed hormonal drugs, for example, Duphaston.

If BT during pregnancy rises to 37.8 ° (or more) and lasts for several days, then this may be due to infection or development inflammatory process.

On the late term pregnancy, usually at the 40th week, BBT rises to 37.4 ° and above. Before labor pains, high rates are observed.

BT in ectopic and missed pregnancy

gradual fall

Anembryony (death of the embryo) is accompanied by a decrease in rectal parameters. The development of pathology is more often observed at an early stage of formation gestational sac.

The process of non-developing pregnancy proceeds gradually. For some time, by inertia, hormones continue to be produced by the cells of the chorionic membrane. Therefore, even against the background of the fading of the fetus, signs of pregnancy persist.

If the graph shows that BT falls simultaneously with the appearance unpleasant symptoms(pain in the abdomen, toxicosis and tension in the chest disappeared), then you need to urgently run to a specialist.

A characteristic sign of a missed pregnancy is when the basal temperature has fallen below critical level 37 °, that is, returned to the indicators preceding conception.

There are cases when the development of the fetus proceeds normally, without manifestations anxiety symptoms. At the same time, signs of anembryony in the form of an increase in BBT and malaise occur suddenly.

A high temperature of up to 37.8 ° and more during pregnancy may appear due to the development of sepsis against the background of fetal decomposition. Therefore, any fluctuations in values require medical attention.

An ectopic pregnancy in the early stages of the BT schedule is difficult to recognize. Normally, gestation should proceed against the background of elevated temperatures.

Signs of ectopic pregnancy are more likely to appear at the 5th week and later. BT rises more than 37.8°, accompanied by dark brown discharge, strong pain syndrome in the abdomen and other unpleasant symptoms.

The condition threatens life and health, therefore, requires immediate hospitalization.

Every woman has this picture.

Basal temperature of a non-pregnant woman

Normally, in the luteal phase of the menstrual cycle, BT is kept at about 37.1–7.4 °. When planning conception, sexual intercourse is recommended 1-2 days before or on the day of ovulation.

In the absence of pregnancy, the indicators of the normal biphasic graph display the following values.

The first sign is that on the 7th–10th day after ovulation, the egg is implanted, which is reflected on the curve by a sharp decrease in BBT less than 37°. Minor spotting may occur against the background of damage to the endometrium. If there is no implantation retraction on the curve, then the pregnancy did not take place.
The second sign is that with successful implantation, the schedule becomes three-phase. BBT remains above 37.1°. In this case, there is a delay in menstruation. The main factor - in contrast to the schedule with a confirmed pregnancy, there is a slight decrease in rectal indicators before menstruation.

An example of a BT schedule in the absence of pregnancy:

no pregnancy

Measurement of basal body temperature (BBT or BBT) - home diagnostic method, which allows you to get information about the phase of the menstrual cycle, the approach and onset of ovulation, the state hormonal background, confirms pregnancy and gives an idea of the nature of its course. It is also used as natural way contraception. BT is the lowest temperature mark that the body reaches in a state of complete rest, in particular during sleep.

Today, the measurement of basal temperature and the analysis of the graphs obtained during ovulation in medical practice used infrequently. Modern equipment, the availability of ultrasound reduce the relevance this study. However, the method is suitable for self-control, is easy to use at home. Reviews of women confirm this.

What is the method based on?

The body temperature of a woman depends on many factors, the main of which is the change in the concentration of sex hormones during the menstrual cycle. Moreover, fluctuations can be observed not even by weeks, but by hours and minutes.

First phase of the cycle. It is caused by the work of estrogen, under the influence of which the egg matures. During ovulation, levels of these hormones, regulated by luteinizing hormone (LH) and follicle-stimulating hormone (FSH), peak. As a result, a mature egg leaves the follicle for fertilization. Increased concentration estrogen inhibits metabolic processes. Accordingly, the temperature in the tissues of the pelvic organs decreases.
Second phase of the cycle. regulated by progestins. After ovulation, the concentration of these hormones increases and affects the formation of the endometrium. Progesterone is also responsible for normal course period of gestation, for which he received the name "pregnancy hormone". It stimulates thermoregulatory processes, which causes an increased basal temperature during pregnancy, before menstruation.

By measuring your basal temperature regularly over several months, you can determine how the phases of the menstrual cycle change, when ovulation occurs and the most likely days of conception. And also to find out if it took place.

For this, BT indicators are recorded every day in a special schedule. You can compose it yourself or use separate calendars, electronic applications.

Basal temperature indicators are rather relative, since the concentration of sex hormones is constantly changing in absolute terms. But that doesn't stop this method be one of the most common when planning pregnancy due to its availability and information content. Also, knowing how the basal temperature changes, a woman can calculate “safe” for intimacy days. Of course, subject to the stability of the cycle.

What does basal temperature show?

BT data are informative not only for the patient, but also for doctors. At correct decoding basal temperature chart can determine pregnancy, as well as:

the relative concentration of estrogens and progestogens;
approaching and onset of ovulation;
deviations in the menstrual cycle;
gestation pathology in the 1st trimester:
suspicion of infertility;
inflammatory processes in the genital organs.

6 rules for accurate results

Basal temperature is a very sensitive indicator, it can be affected by various factors. Therefore, the reliability of the conclusions depends only on the accuracy of the measurements. To achieve this, it is necessary to prepare for the construction of a BT schedule. Here are the main recommendations:

limit sex - a few hours before measuring BBT;
avoid stress- physical and emotional at the time of measurements;
follow a diet - it is useful to limit the consumption of salty, fatty, fried foods;
rest - before measuring basal temperature, you need to sleep for at least three hours.

It is necessary to measure basal temperature to determine ovulation by adhering to the following six rules.

Measurement frequency. Temperature readings should be recorded every day at the same time, marking them in a special graph (table). BBT measurement before and during menstruation should also be carried out.
Method . BTT is measured rectally - in the rectum. Oral and vaginal methods are not standard for this procedure and do not give accurate results.
Times of Day . The procedure is carried out in the morning. Before her, a woman must be in a state of complete rest (preferably sleep) for at least three hours. If there was a night shift at work the day before, a note should be made, as this may affect the result. It is pointless to conduct research in the evening - it is not informative at this time. Any physical actions. It is not even recommended to shake the thermometer before taking a measurement. Any activity changes the readings of the basal temperature, so the procedure is carried out at the moment of waking up and before getting out of bed.
Thermometer. Measurements should be carried out with the same thermometer, without changing mercury to electronic and vice versa. The most reliable evidence is mercury thermometer. It must be brought down to the minimum mark the night before, so as not to make efforts immediately before the procedure.
Duration. It is acceptable if a woman does not ovulate every month, especially closer to 40 years. Therefore, measurements should be carried out over a long period of time (at least 12 weeks). During pregnancy, it makes sense to measure up to the 2nd trimester, in the 3rd - the hormonal profile "at its discretion" changes the temperature.
Fixing indicators. It is best to mark the result immediately in the graph: since the difference in performance can be tenths of a degree, it is easy to forget or confuse them. As the points-marks of the basal temperature are put down, it is recommended to connect them with each other with lines. The graph should also note any factors that could affect the changes and validity of the data.

BT indicators: normal ...

There are relative norms of basal temperature, according to which it is possible to calculate, without the help of a specialist, what phase the cycle is in and the days of the highest female fertility.

First phase (downgrade). Regulated by estrogen. It falls on days 1-13 of the cycle. Immediately after menstruation, the basal body temperature drops to 36.6-36.2°C.
Ovulatory phase (oscillations). Peak activity of estrogens, FSH and LH. Lasts up to three days. A day or two on the eve of ovulation, BBT reaches 36.6-36.7 ° C. Basal temperature during ovulation rises by 0.1-0.4 ° C. After the rupture of the follicle and the release of the egg, the indicator is 37-37.4 ° C.
Second phase (upgrade). It is regulated by progesterone and falls on days 16-28 of the cycle. During this period, BT is increased, its indicators vary between 37-37.4°C.

A few days before the onset of menstruation after ovulation, the level of progesterone rapidly decreases and a low basal temperature is again noted (within 36.8-36.6 ° C).

… and deviations

The basal temperature chart is a kind of indicator of a woman's health status. Deviations from the norm of BT indicators may indicate the following.

Inflammation . If an elevated basal temperature is recorded before and during menstruation, this may indicate an inflammatory process in the organs of the reproductive system.
The disadvantage of the second phase. BBT indicators in the luteal phase of the cycle below the norm indicate a progesterone deficiency.
Individual characteristics of the organism. Small deviations (in tenths of a degree), which persist throughout the cycle, may be individual manifestations of the body's work.
Offset ovulation. Moving the BT jump horizontally according to the chart (to the right or left side) indicates an early or late ovulation. Only a specialist can judge its success.
double ovulation. It is characterized by two peaks of temperature increase. Moreover, the second one is possible in the late second phase, it is superimposed on the main value and therefore it is difficult to notice it.

no ovulation

If the cycle passed without ovulation, there are several options for basal temperature charts.

High temperature in the first phase. When in the first half of the cycle the temperature is more than 36.6 ° C, this indicates that the level of estrogen is lowered. They are not enough to keep the temperature down, so the egg cannot mature.
Smooth, not rapid rise in temperature. Such dynamics of BT during ovulation indicates the inferiority of the egg, which is why the follicle does not rupture.
Sudden drop and then rise in temperature. In the second phase, this indicates that the egg has died.
Consistent temperature readings throughout the cycle. Complete absence jumps in basal temperature indicate the absence of ovulation.

Application hormonal drugs(for example, Duphaston, oral contraceptives) changes the basal temperature. Jumps depend on what type of hormones were used.

Values during pregnancy

Often women resort to the method of measuring basal temperature in order to increase the chances of conception. Many rely on BBT readings to determine if a pregnancy has taken place and how it is progressing. This method is effective (including with twins, triplets), but only in the early stages - more modern and reliable diagnostic methods are available from the 2nd trimester.

Basal temperature during pregnancy may have the following indicators.

Successful pregnancy. If fertilization has occurred, after ovulation, until the delay in menstruation, an increase in basal temperature is observed, which will continue to stay on high level. This is due to the influence of progesterone. If menstruation does not occur, and the temperature value has decreased, this indicates a cyclic failure. The norm of basal temperature in the early stages of pregnancy is in the range of 37-37.5 ° C.
Frozen pregnancy. If the fact of conception is established, but there is a sharp decrease in BT during early pregnancy, which subsequently remains at the same level, this indicates the death of the embryo.
Ectopic pregnancy. Most often, in the early stages, such cases do not affect the basal temperature and the schedule corresponds to the developing pregnancy.
Risk of miscarriage . Often the cause of a miscarriage is progesterone deficiency, as indicated by a low basal temperature both before and after the delay. If at the same time there were bloody issues, you need to sound the alarm and seek medical help.

Many factors can affect the basal temperature chart during pregnancy, so it should only be an auxiliary, and not the main method of monitoring health during this period.

Charting a basal temperature is one of the methods for assessing the work of the reproductive system, which is available to almost every woman.

Maintaining the schedule and its decoding require compliance certain rules and subtleties, otherwise there is a high probability of obtaining distorted results.

Keeping a graph of basal temperature allows you to determine the correct functioning of the female ovaries and identify a number of problems that affect the ability to conceive a child.

The chart can be used to determine:

egg maturation time;
in a particular cycle or its absence;
favorable and unfavorable days for conception;
the presence of hormonal problems;
diseases of the pelvic organs;
the reason for the delay of the next menstruation.

The measurement results will be informative only if the graphs were kept for at least three menstrual cycles.

Some gynecologists observe for at least six months to make an accurate diagnosis. For a correct interpretation it is necessary. Otherwise, the graph data will not be representative.

Building a BT schedule during pregnancy

The method of basal temperature charting is becoming more common due to its availability. All you need is a thermometer, a checkered notebook and a pencil.

Basal body temperature is measured in anus daily, immediately after waking up. The obtained value is entered into the table and marked on the graph.

The graph reflects the daily results of measurements during the menstrual cycle (not a month). A normal cycle is 21 to 35 days. The beginning of the cycle is considered the first day of menstruation (and not its completion, as some people think).

Each menstrual cycle should have its own basal temperature curve.

On the vertical axis the graphics are marked with degrees (1 cell = 0.1 ° C), on horizontal axis– days of the cycle and the date corresponding to this day. The obtained temperature value is marked on the graph by the corresponding point, after which the neighboring points are connected to each other. Thus, a curve of basal temperature changes during the cycle is built.

Factors that may affect the reliability of the measurement should be noted against the corresponding day of the cycle.

These include ailments, alcohol intake, sex shortly before measurement, insomnia, stress, moving. Unusual temperature jumps caused by these factors can be eliminated from the curve.

Deciphering the different types of graphs with examples: high, low and normal temperature

The graph reflects the dependence of basal temperature on the phases of the menstrual cycle. In the first phase, which is called the follicular, the maturation of several follicles occurs. This period passes under the influence of estrogen, the temperature value varies between 36.4-36.8 ° C.

The first phase takes about half of the cycle. At this time, one of the several follicles remains, the maturation of the egg occurs in it.

Then the follicle bursts and the egg is released from the ovary, that is, ovulation occurs.

Before ovulation, basal temperature drops to its minimum.

The second phase of the cycle begins, in which a corpus luteum appears in place of the bursting follicle. Its cells synthesize a hormone, under the influence of which there is a jump in basal temperature by 0.4-0.8 ° C. This phase is called the luteal phase.

If conception does not occur during the cycle, the level of progesterone drops, and the basal temperature decreases slightly 2-3 days before the upcoming menstruation.

Normal biphasic schedule

basal temperature chart healthy woman has clearly demarcated phases of the menstrual cycle: follicular with a low basal temperature and luteal, which is distinguished by an increase in temperature. Before ovulation and the onset of menstruation, there is a drop in temperature.

The graph is divided into phases by the ovulation line. The follicular phase is a curve segment from the first day of the cycle to ovulation, the luteal phase is from ovulation to the end of the cycle. The duration of the first phase of the cycle - idiosyncrasy every woman and there are no clear requirements for her. The second phase should normally last 12-16 days.

If for several months of observation the length of the luteal phase does not fit into this range, a consultation with a gynecologist is necessary. This may indicate the insufficiency of the second phase.

In a healthy woman, the duration of each phase should not vary significantly with different menstrual cycles.

Normally, the average temperature difference between cycle phases should be 0.4 °C or more.

To determine it, it is necessary to add up all the values of the basal temperature in the first phase and divide by the number of days of the phase. Similarly, the average value of the basal temperature in the second phase of the cycle is calculated.

Then the first one is subtracted from the second received indicator; the result obtained characterizes the difference in average temperatures. If it is below 0.4 ° C, this may be a sign of the presence of a hormonal imbalance in the body.

Basal body temperature chart at conception

If conception occurred in the menstrual cycle, then the basal temperature in the second phase behaves somewhat differently. It is known that after ovulation, BBT normally stays above 37 ° C. However, in a cycle when pregnancy occurs 7-10 days after ovulation, the temperature drops below 37 ° C. There is a so-called implantation retraction.

estrogen deficiency

In the case of estrogen deficiency, there is no division of the cycle into clear phases on the graph, since low level estrogen causes an increase in body temperature follicular phase cycle. The curve is chaotic, it is impossible to determine the date of ovulation.

Conception in this case is unlikely, it is necessary to seek the advice of a gynecologist. If estrogen deficiency is confirmed after additional surveys, the patient will be prescribed hormonal treatment.

Anovulatory cycle

In the absence of ovulation, the graph looks like a monotonic curve without division into phases. In the second phase of the menstrual cycle, the basal temperature remains low and does not exceed 37 ° C. In such a cycle, the formation that synthesizes progesterone does not occur, so the basal temperature does not increase in the second half of the cycle.

A couple of anovulatory cycles per year is a variant of the norm, but if the situation repeats for several months in a row, you should consult a doctor. Pregnancy without ovulation is impossible, so you need to find the root of the problem together with a gynecologist.

The average temperature difference between cycle phases is 0.2-0.3 °C. If such graphs are built for several cycles in a row, this may be a sign of infertility due to hormonal disorders.

If the corpus luteum does not function efficiently enough and does not produce required amount progesterone, the temperature in the second phase of the cycle rises slightly. At the same time, the duration of the second phase is reduced to 10 days and there is no drop in basal temperature before the onset of menstruation.

In case of insufficiency corpus luteum fertilization of the egg is possible, but the risk of its rejection in the same cycle is high.

To confirm the diagnosis, a woman needs to take a blood test for progesterone.

The diagnosed insufficiency of the corpus luteum is corrected by taking artificial analogues of progesterone ("" or "") in the luteal phase of the cycle.

Prolactin is the hormone responsible for pregnancy and breast-feeding. Normally, in a non-pregnant woman, it is absent or its level is extremely low.

If by certain reasons it rises, the basal temperature graph becomes identical. In this case, there may be a lack of menstruation.

Inflammation of the appendages

The presence of an inflammatory process can be suspected by a jump in temperature in the first segment of the graph. There is a high basal temperature in the first phase of the cycle.

It rises sharply to 37 ° C and drops sharply after a few days. Such a jump can be mistaken for an ovulatory rise in temperature, so it can be difficult to determine the onset of ovulation with this type of schedule.

endometritis

normal with arrival critical days basal temperature should decrease. With endometritis (inflammation of the uterine mucosa), there is a drop in temperature before the onset of menstruation and its rise to 37 ° C in the first phase of the menstrual cycle.

Maintaining basal temperature charts - affordable and safe method definitions of favorable and bad days for conception. But due to its high sensitivity, it requires a responsible and competent approach, otherwise keeping a schedule loses its practical meaning.

Even if the graph is plotted correctly, it must be remembered that the final diagnosis is never made only on the basis of the analysis of the curve data. Any diagnosis must be confirmed by tests and additional studies.

Pregnancy is a period when the expectant mother carefully monitors her health. After all, now she worries not only about herself, but also about the life that originated inside her body.

It is very important not to worry for any reason, because unnecessary excitement will not bring any benefits. There are some methods, such as measuring basal body temperature, that will help you constantly monitor your health.

This technique helps to identify some dangerous symptoms. By reacting in time, the expectant mother will be able to protect her unborn baby. If there is any deviation from the norm, then it is necessary to urgently seek help from a doctor.

What is BT?

Usually it is abbreviated as BT, less often rectal temperature. As the name implies, it is not measured in a standard way- armpits. There are several options for measuring - in the mouth, in the vagina and in the rectum. With its help, ovulation is often tracked when a woman wants to become pregnant.

Normal menstrual cycle more often it shows up to 37 Celsius, but exactly until the moment when ovulation begins - then the temperature rises by 0.4 Celsius. After that, or in 1-2 days, it goes down again. But if this does not happen, then, most likely, pregnancy has occurred.

How much should be during pregnancy? And how long should she stay?

Each organism is individual, but normally - 37.1 - 37.3, exactly the temperature is during ovulation and remains so if pregnancy occurs. It is worth remembering that the borderline norm is 37.0. If there is a deviation of 0.8 degrees in any direction, this is a reason to go to the doctor, or at least you should consult with a physician.

Regarding how long she keeps, the answer is unequivocal - from the beginning of pregnancy and the first few months, while the girl is carrying the fetus.

Why measure BBT?

There are two reasons for this - to monitor the health of the mother and child, as well as to plan pregnancy.

The first reason, as mentioned above, helps to understand whether everything is in order with health. And the second reason helps to calculate ovulation. When a woman wants to have a baby, she needs to determine when ovulation occurs. When there is an increase in BBT, this is a sign that it has come, and now the most likely to become pregnant.

How to measure it during pregnancy?

Be sure to measure should be carried out in the morning, immediately after sleep, when the body is still at rest. Important point- It is desirable that the sleep is full, at least six hours. You can measure it in any way, but rectal is considered the most reliable. Measurement in this way should be carried out for at least three to four minutes.

Oral and vaginal methods of measurement are also suitable, however, the time increases to five minutes. Any thermometer is suitable - both ordinary mercury and electronic. It is advisable to take measurements every day and mark them in a notebook or a special chart - it is easier to track the dynamics. It is necessary to carry out the procedure every time at the same time, the allowable time difference is thirty minutes.

Some factors, such as illness, stress, travel, consumption of alcohol-containing products and even certain medications, can affect the accuracy of the result. Also, do not use contraceptives if you measure rectal temperature.

Norm after conception

Each organism is individual. This can be proved by a simple fact - some people have normal (not rectal) temperature - 36.6, others - 37 and even higher. At the same time, two types of people feel excellent and do not get sick.

So when measuring BT - it all depends on the specific organism. However, you should know the generally accepted and most common norms - from 37 to 37.3. The temperature rises, as a special hormone - progesterone, begins to be produced in large quantities. This happens to protect the fetus.

There were cases when a woman had a rectal temperature - 38, but she was not sick and everything was in order with the fetus. Such cases are very rare, usually, if the temperature is already above 37.3 or below 37, it is wiser to contact the doctors.

Definition of pregnancy by basal temperature

Most likely, a woman is pregnant if the following symptoms are observed:

The temperature is elevated three days after the end of ovulation.
If, with a normal two-phase schedule, a girl observes another jump in temperature (this condition is not considered mandatory).
The corpus luteum phase does not stop for 18 days - that is, the temperature is elevated all this time.

Daily fluctuations in BT

As usual, it is necessary to measure the temperature immediately after sleep, at the same time. The fact is that factors such as light physical exercise, food, and even clothes can affect the result. Normally, when exactly on the day (not in the morning), it rises above 37.3 - however, the reasons for such an increase are just the factors described earlier.

Therefore, it makes no sense to measure it during the day or even in the evening - you will not understand whether the fluctuations are caused by the usual load on the body or there is reason to worry. Just imagine, in the early stages in the evening, BBT can rise by 1 degree! Morning results are the most reliable, so note them.

Raise

If there is a situation with an increase in body temperature during pregnancy, inflammatory or infectious processes. But this is only if the increase was fixed correctly, that is, in the morning. Termination of pregnancy in this case is unlikely, but it cannot be discounted.

Regarding an ectopic pregnancy - it may not necessarily cause an increase rectal temperature. Usually it is within the normal range. If this type of pregnancy is disturbed, the woman may feel severe pain in the abdomen, there may even be bleeding. In this case, you can not postpone, you should call an ambulance.

The fall

This also happens. Its fall, especially sharp, should alert. It means what's going on underproduction hormones. This clearly indicates that the body is not able to support the female body during pregnancy.

If, along with a decrease in rectal temperature, you notice symptoms such as pain in the abdomen, bleeding, prolonged tone of the uterus, then consult a doctor, you should be examined.

A frozen pregnancy usually shows a result below 37, but even in this case, you should not panic, but contact a medical institution.

When and how to measure?

In the morning, without getting out of bed, at rest and with minimal activity. To do this, you need to take a thermometer and place it in the vagina or rectum for two centimeters. Hold the thermometer for three to five minutes.

It is necessary to measure BT every time with the same method, that is, choose one - rectal or place a thermometer in the vagina. The thermometer cannot be changed either, as well as the time of measurement - if you decide to measure at 8.00 in the morning, then continue in the same spirit. Oscillations can be up to thirty minutes in both directions.

In order to carry out the procedure as accurately as possible, here are a few rules that must be followed:

Do the procedure in horizontal position and in no other way, don’t even turn on your side, all the more you can’t squat.
Required good sleep- from five hours.
It is advisable not to have sex while you are monitoring temperature changes. Or at least maintain a gap of half a day between the measurement and sexual intercourse.
You can not take drugs - they both lower and increase BBT. It is worse when they increase it - you may have it below the norm, and you will think that it is in order.
Eat breakfast only after the procedure.
Try not to get sick - even a sore throat can distort the performance.

Why is a schedule needed?

If the expectant mother wants to seriously monitor this indicator, then you can’t do without a schedule. Different circumstances can affect rectal temperature, especially in the first months of pregnancy.

Usually, the fluctuations on the chart look like this:

On the day of conception - from 36.4 to 36.7.
The next three or four days there is an increase of 0.1, that is, it can reach 37 degrees.
The next two or three days, the value may remain the same.
On the day of implantation of the ovum into the uterine mucosa, it decreases to 36.5-36.6 degrees.
Further three the day is coming smooth rise and is achieved from 36.7 to 37.
The next fourteen days the value ranges from 36.7 to 31.1. It is important to monitor whether it has fallen below the value that was during ovulation.

It is important to indicate in the schedule not only the numbers, but also the possible circumstances that influenced them - illness, stress, reception medical devices etc. The attending physician should be aware of them.

How to correctly compose and decipher a graph: a detailed guide

You can draw it yourself, or find it on the Internet and print it. Include the following in your schedule:

"Pregnant" charts

It is impossible to measure everything with one graph alone, discrepancies are acceptable. At different women happen different indicators. Here, for example, some do not observe implantation retraction, or there are several of them at once.

It happens that the temperature rises sharply, or, conversely, smoothly. Sometimes it does not rise above 37. All the options described are defined by physicians as the norm.

Is it possible to determine pregnancy with a thermometer without a chart?

You can, for this you need to follow the rules:

In the evening, shake the thermometer and put it next to, but not under the pillow. The main thing is that it is convenient for you to get it without using sudden movements;
In the morning, without eating, and without even getting up, use a thermometer. Choose either the rectal method or place the thermometer in the vagina. It must be placed two centimeters;
Wait three to five minutes;
If the indicator is above 37, you are probably pregnant.

But you can not count on accuracy, an increase can signal an inflammatory process, infection, hormonal failure or normal stress.

Factors affecting performance

To obtain reliable result, exclude such situations:

Taking medication;
Use of contraception (oral or spiral);
Banal lack of sleep;
Consumption of alcoholic beverages;
Sex less than six hours before measurement;
Overwork;
Any illness;
Increased normal temperature.

Is it necessary to control during pregnancy?

It makes sense to do this during the first months. It remains elevated until the twentieth week after conception. Usually, not only gynecologists, but even endocrinologists vote for the control of BT.

With the help of BBT measurement, deviations can be noticed in time and reacted to them. Low rates may signal a threatened miscarriage. Therefore, the answer is unambiguous - it is desirable to control it. However, this is not the only way state diagnostics future mother and her child.

At different stages of pregnancy

Consider the basal temperature at various stages of pregnancy:

Week 3 corresponds to 1st embryonic week. BT shows from 37 to 37.7 and slightly higher. The mark below indicates deviations and the danger of miscarriage.
N. 4 in the range from 37.1 to 37.3 °, maximum - 38. If higher, then it is possible that this is an infection.
H. 5 is stable from 37.1 to 37.7. If she “jumps”, then pay attention to other signs: drawing pains, hardening of the abdomen, softening of the mammary glands, etc.
N. 6 retains the previous results: from 37.1 to 37.7. If it rises or falls significantly, fetal death is possible.
N. 7-8 from 37.1-37.3 (not lower) and not higher than 38. For non-standard indicators, pass additional diagnostics health (ultrasound).
N. 9-10 - as during weeks 7-8, but more than 37 and below 38. If this is not the case, consult a doctor.
N. 11 decrease from 37 to 37.2. If it is still high, then consult a gynecologist.
N. 12 from 37 to 37.8, but not higher than 38. Ideal are from 37.6-37.7 °.

The last weeks show from 36.6 to 36.8. At the fortieth week, it rises to 37.4 and can rise immediately before childbirth.

Deviation from the norm

If it deviates from the norm, then it is either ovulation or pregnancy. During pregnancy, the doctor often recommends that you measure it to eliminate the risk. Especially often this method is recommended for those who have previously experienced a miscarriage or problems during gestation.

Why is she too tall?

This may be due to an infection, due to an inflammatory process, or even an ectopic pregnancy. In this case, you need to monitor some other signs: does the stomach hurt, what color is the discharge (normally transparent). If you see them, you need to do an ultrasound.

Possible threat of interruption

This is signaled by a decrease in BT. The decrease is due to a lack of progesterone production. If the result falls below 37, in addition, abdominal pain and discharge are felt. Brown need to seek help urgently.

Frozen pregnancy

Unfortunately, in this case, you will have to extract the fetus, it threatens the woman's life. It does not always come out on its own, because of this you will have to seek medical help.

Other signs that signal the fading of the fetus are the absence of toxicosis, the mammary glands no longer increase.

Is there a low BBT during normal pregnancy?

It is difficult to talk about norms - they are always conditional. Not always low temperature interferes with bearing fruit, women give birth healthy babies and their lives are not in danger. In addition, there may be such an option - during ovulation, just before conception, the temperature was 36.4, so it is unlikely that it will reach 37 during the next two weeks.

However, if there are such signs - pain or opaque highlights- you need to go to the doctor.

Basal temperature of a healthy woman

The norm is not lower than 36.2, but not higher than 37.2. Before ovulation, the temperature drops, while it rises - this determines the most probable moment for conception. After conception, it practically does not decrease.

Signs of probable infertility according to the schedule

This is indicated by the following:

The average of the second phase of the cycle (after the temperature rises) exceeds average the first phase by less than 0.4 degrees.
In the second phase of the cycle, the temperature drops change (it is below 37).
The rise in temperature in the middle of the cycle lasts more than three to four days.
The second phase is short (less than eight days).

Schedule for ovulation stimulation

With, especially clomiphene (clostilbegit) and using, in the second phase of the MC, the rectal temperature graph usually becomes “normal”. Two-phase, with a pronounced phase transition, with enough high temperature in the second, with characteristic “stages” (the temperature rises twice) and a slight drop.

If the schedule during stimulation is disturbed and deviates from the norm, this may indicate an incorrect selection of the dose of drugs.

An increase in the first phase during stimulation with clomiphene also occurs with individual sensitivity to the drug.

When to contact a gynecologist?

If you are serious about BBT and see a problem for two cycles in a row, see your doctor. However, he should not prescribe drugs only on the basis of the schedule, you should be referred for other types of examinations. Pay attention to such factors:

Novulatory charts.
Constant cycle delays, while pregnancy does not occur.
Late ovulation and you don't get pregnant for a couple of cycles.
Controversial indicators with fuzzy pronounced ovulation.
Graphs with high or low temperature throughout the cycle.
If the second phase is short (less than 10 days).
High rates in the second phase of the cycle for more than 18 days, while there are no periods, and pregnancy has not occurred.
Bleeding or heavy discharge in the middle of a cycle.
Profuse discharge during menstruation, which is more than 5 days.
Graphs with a temperature difference in the first and second phases of less than 0.4.
Cycles less than 21 days or more than 35.
Schedules with a well-defined ovulation, regular intercourse during ovulation, but the woman does not become pregnant for several cycles in a row.

BT as a method of contraception

They can be used, because the highest probability that a woman will become pregnant is during ovulation and two days after it. And since this method can calculate a given period, it is able to serve as a method of contraception.

Do you trust this method?

They can be used as additional method pregnancy control and planning. However, you cannot rely on it alone, because modern methods diagnostics are more accurate. But how additional measure BT measurement is a great idea.