Calculate your last menstruation. Calculation of a personal ovulation calendar
Ovulation and conception calendar is a universal and fairly easy-to-use service designed to calculate the menstrual cycle and the most favorable period conceiving a child. Its main task is to help a woman determine the days of increased fertility ( ovulation), during which conceiving a child most likely. At the same time, thanks to the calculation of the so-called “safe days”, ovulation calendar allows her to avoid unwanted pregnancy without the use of any medications or mechanical contraception. In order to take advantage ovulation calendar and calculate your own menstrual cycle(favorable period conceiving a child), fill in all the fields of the form below one by one. Registered and authorized users of our Internet portal can save their personal ovulation and conception calendar in the "favorites" section personal account and return to it later.
Ovulation calendar and the most favorable days for conceiving a child
Ovulation- this is the process during which an egg that is mature and completely ready for upcoming fertilization leaves the ovary and enters the abdominal cavity and then goes into the lumen of the fallopian tube. It was during this period that the likelihood conceiving a child maximum and is estimated at approximately 33%, which, of course, should be taken into account when calculating ovulation calendar and a woman’s planning for an upcoming pregnancy. After ovulation the egg is capable of fertilization ( conception) for 12-24 hours, while sperm after ejaculation remain active for 2-3 (and much less often 5-7) days. Considering this fact, the possibility of a woman becoming pregnant the day before ovulation is approximately 31%, two days before - 27%, and three and four days before ovulation- 16 and 14% respectively. In the same time conceiving a child six days before ovulation or the day after it is unlikely and even practically impossible. Usually ovulation occurs between the 14th and 16th days of the menstrual cycle under the influence of estrogens and pituitary hormones.
Ovulation calendar and sign of conception
One of the most reliable and important signs of the onset ovulation and favorable period for conceiving a child are changes in cervical mucus women. First of all, under the influence of estrogens, the amount of secretions increases and their viscosity decreases. The next, no less important, sign of egg maturation should be considered a decrease in rectal (basal) temperature during ovulation and raising it the next day. At the same time, in order to more accurately calculate ovulation and conception calendar, it is recommended to take your temperature every morning at the same time for several months. Sometimes at the moment ovulation a woman feels pain in the lower abdomen, the nature of which can vary quite widely from weak and short-term to strong and very long-lasting. It should also be noted that on days ovulation Some women experience a peak in sexual arousal.
Ovulation and conception calendar is a diagram of the menstrual cycle, which marks the time of its beginning, end, as well as the ovulation. Full management calendar involves mandatory recording of periods of active sexual activity. Compilation ovulation and conception calendar it is necessary to start long before planning pregnancy in order to learn how to determine the moment as accurately as possible ovulation and become familiar with all the features of your own body.
Ovulation calendar and conceiving a child
Depending on the probability conceiving a child and time ovulation menstrual cycle ( conception calendar) can be conditionally divided into three phases: relative sterility, fertility and absolute sterility. The period of relative sterility begins from the moment of appearance bloody discharge and ends ovulation. During this phase, some difficulties with contraception may arise, since its duration sometimes varies within several days, even with a stable duration of the cycle as a whole. This happens due to the fact that periodically, depending on certain factors (external and internal), ovulation comes a little earlier or vice versa later.
The fertile phase begins from the moment ovulation and ends after 48 hours. At this time the probability conceiving a child as high as possible. As noted above, after leaving the ovary, the egg is capable of fertilization within 12-24 hours, the remaining half of the time is allocated to inaccuracy in timing ovulation. Following the period of increased fertility, the woman enters a phase of absolute sterility, during which conceive a child almost impossible. This period lasts until the end of the menstrual cycle and is about 10-16 days.
Ovulation calendar and calculation of the period of conception of a child
Majority modern women count on ovulation and conception calendar in order to bring the long-awaited motherhood closer. Others are building calendar to protect yourself from unplanned pregnancy. However, no matter what goals they pursue, when calculating the menstrual cycle (and ovulation calendar in particular) in any way there is always a possibility of error.
According to calendar method calculation ovulation a woman should record the start and end days of her menstrual cycles for at least six months. In order to determine your individual fertile period based on these data ( ovulation and conception calendar), it is necessary to subtract 11 from the number of days of the longest cycle (the last fertile day of the cycle), and 18 from the number of days of the shortest cycle (the first fertile day). So, for example, the longest cycle for a woman is 32 days: 32-11=21 (the 21st day of the cycle is the last in the fertile phase). Her most short cycle equal to 26 days: 26-18=8 (8th day is the first in the fertile phase). In this case, the most favorable period for conceiving a child is the interval from the 8th to the 21st day of the cycle (13 days in total).
One of the best and more accurate methods of calculation ovulation and conception calendar child is a combination of the above methods, which is called the symptothermal method. It includes measurement basal temperature body, daily monitoring of cervical mucus and careful calculation ovulation calendar and favorable period for conceiving a child calendar method.
Action of tests for calculation ovulation calendar based on the same principle as for diagnosing pregnancy. When interacting with a woman’s urine, two transverse lines appear on it, one of which indicates the normal performance of the test, and the second indicates an increase in the level of luteinizing hormone (LH) and the woman’s full readiness for conceiving a child. However, if the second line remains paler than the control line for several cycles in a row, this may indicate the absence of ovulation due to any disease (disease thyroid gland and hyperprolactinemia, obesity and wasting, polycystic ovary syndrome and infantilism, increased level FSH and reduced level estradiol, chronic stress, etc.) and is a reason to consult a doctor.
Calculation of the day of ovulation, menstrual cycle and days favorable for conception and pregnancy.
Using this calendar you can calculate the days ovulation, that is, when the probability of pregnancy is maximum and determine the most favorable days for conceiving a child (boy or girl) without pharmacy ovulation tests for determining days of ovulation. The conception calendar helps women planning pregnancy to calculate the days of ovulation and create a personal conception calendar. You can chart your female menstrual cycle months in advance! You'll get menstrual calendar for 3 months which will indicate: ovulation day, days favorable for conception, days to conceive a boy and a girl. Do not confuse the duration of menstruation (period) and the duration of the menstrual cycle! Interactive ovulation calendar: hover over a day on the calendar and read additional information.
The nature of menstruation and its regularity are important indicators of women's reproductive health. The body reacts sensitively to any stress, so it is possible random deviations from the norm, which are not considered a pathology. However, if the disturbances are persistent, this may indicate a disease. It is convenient to mark the start and end days of menstruation on a calendar. This will allow you to find out the duration of the next cycle and not miss unusual changes. It is important to understand what processes occur between menstruation, when conception is possible, and why critical days occur more often or less frequently than usual.
Content:
Why is cycle duration calculated?
Processes in women's reproductive organs repeat every month, on average every 28 days. Thanks to individual characteristics body cycle can be shorter (up to 21 days) or extended (up to 35 days). The main indicator of health is not so much the number of days in it, but the constancy of this indicator. If a woman gets her period regularly after 5 weeks or after 3 weeks, this is normal. But if they occur either after 35-40 days, or after 20-21, and this happens repeatedly, this is already a pathology.
- Prepare for the onset of menstruation, take measures to ease premenstrual syndrome(plan, for example, the load during critical days).
- Provide for the possibility of pregnancy in the middle of the cycle, increase attention to contraception.
- Take into account which days will be most favorable for conception and the onset of the planned pregnancy.
- Notice the onset of pregnancy and approximately calculate the day of birth.
- Plan a preventive visit to medical specialists (gynecologist, mammologist).
Having noticed persistent irregularities in the frequency of menstruation, it is necessary to consult a doctor in time to prevent early menopause or the occurrence of diseases of the uterus and ovaries.
What processes occur during the menstrual cycle
Processes occurring in the female reproductive system, are directly related to the ratio of sex hormones that are produced in the ovaries. The cycle is conventionally divided into phases: follicular, in which the maturation of the egg occurs, ovulatory and luteal - the phase of the onset and maintenance of pregnancy.
Follicular phase
The beginning is considered the first day of menstruation. Its duration is different women ranges from 7 to 22 days (the duration of this particular phase determines whether a woman’s cycle is short or long). The phase begins with menstruation - the cleansing of the uterus from the endometrial layer that formed earlier. Menstruation occurs when fertilization of the egg does not occur.
By the end of menstruation, the pituitary gland begins to produce follicle-stimulating hormone, under the influence of which several follicles (vesicles with eggs) develop in the ovaries. Of these, one stands out, the largest (dominant), which grows to approximately 20 mm in diameter. The growth of the rest stops.
During the development of follicles, estrogens are intensively released, due to which a new layer of mucous membrane (endometrium) begins to grow in the uterus.
Ovulation
The follicle (the so-called Graafian vesicle) that has matured along with the egg bursts on days 7-22 (on average 14) of the cycle. At the same time, the hormone lutein is released from the pituitary gland, which promotes the formation of the corpus luteum from the ruptured membrane. Its purpose is to produce progesterone, which prevents the development of new follicles. Ovulation and progesterone production usually continues for 16-48 hours.
Luteal phase
It is called the corpus luteum phase. This temporary gland functions for approximately 12 days, producing progesterone. If fertilization of the egg occurs, then corpus luteum continues to function until the placenta forms in the endometrium. If pregnancy does not occur, the gland dies and menstruation begins.
Conception is most likely in those few days when ovulation occurs and a mature egg is released. By carefully observing the changes occurring in the body for six months, a woman can roughly predict when the “dangerous” days will come. The total duration of the luteal phase is 13-14 days and is practically unchanged.
Video: How to calculate the duration of menstruation and determine ovulation. Cycle phases
Causes of menstrual irregularities
In addition to fluctuations in the timing of menstruation, menstrual disorders also include the duration of menstruation less than 3 or more than 7 days, changes in the intensity of blood discharge (less than 40 ml or more than 80 ml on all days), and lack of ovulation.
The causes of violations may be:
- Diseases of reproductive and endocrine organs. You need to know how to count your menstrual cycle so as not to miss the onset of the disease.
- Hormonal changes during natural age-related changes(maturing period, menopause). IN puberty The maturation of the ovaries is just beginning, so in the first 2 years, girls’ periods may be delayed by 2-6 months. Often, ovarian maturation is completed only during the first pregnancy. For many women, the cycle stabilizes after childbirth.
- Physiological processes during the recovery period of the body after pregnancy and childbirth, during lactation.
- Violations hormonal levels after an abortion.
- Hormone imbalance caused by stress, medications, sudden weight loss or weight gain.
The older the woman, the more likely occurrence of violations, as they accumulate possible reasons(number of births, abortions, consequences of gynecological and other diseases), the body ages.
Why does the cycle lengthen?
The reason for the increase in cycle length may be the lack of ovulation due to inadequate development of follicles. In this case, the corpus luteum does not form and progesterone levels do not increase. Under such conditions, under the influence of estrogens, the endometrium continues to grow until it begins to break down mechanically. In this case, the onset of menstruation is significantly delayed.
Another reason for lengthening the cycle may be the existence of the corpus luteum for too long after pregnancy has not occurred. This anomaly is determined using ultrasound.
Addition: The opposite situation is also possible. A woman experiences a delay in her period due to the onset of pregnancy, but when she comes to be checked by a gynecologist, it turns out that there is no corpus luteum in the ovaries, although it should be there and provide nutrition to the embryo. This indicates a threat of miscarriage. Required special treatment hormones.
Reasons for shortening the cycle
The cycle is shortened due to the fact that the corpus luteum dies earlier than usual, or follicle maturation and ovulation occur faster.
Often, deviations in cycle duration are the body’s response to the occurrence of extreme conditions life, when for health reasons or due to severe life situation bearing healthy offspring is impossible. For example, during the war, women lost their periods altogether.
Video: Duration of the menstrual cycle. Reasons for deviations
How is cycle time calculated?
The countdown starts from the first day of menstruation. And it ends on the last day before next menstruation. How to correctly calculate the menstrual cycle, taking into account the different number of days in each month, can be seen in examples.
Example 1. The woman had her previous menstruation on March 5, and the next one came on April 2. The duration of the cycle is 27 (the number of days starting from March 5 and ending on March 31) + 1 day (April 1) = 28 days.
Example 2. The previous menstruation was on September 16, the next one on October 14. The duration of the cycle is: 15 (from September 16 to 30) + 13 (in October) = 28 days.
Example 3. The previous menstruation was on February 10 (it was a leap year), and the next one came on March 6. The cycle is equal to: 20 (from February 10 to February 29) + 5 (in March) = 25 days.
Single deviations should not cause alarm; they can be considered the norm. But in case of long-term violations, it is necessary to undergo an examination to find out the cause.
Calculation of the day of ovulation, menstrual cycle and days favorable for conception and pregnancy.
Using this calendar you can calculate the days ovulation, that is, when the probability of pregnancy is maximum and determine the most favorable days for conceiving a child (boy or girl) without pharmacy ovulation tests for determining days of ovulation. The conception calendar helps women planning pregnancy to calculate the days of ovulation and create a personal conception calendar. You can chart your female menstrual cycle months in advance! You will receive a menstrual calendar for 3 months, which will indicate: ovulation day, days favorable for conception, days to conceive a boy and a girl. Do not confuse the duration of menstruation (period) and the duration of the menstrual cycle! Interactive ovulation calendar: hover over a day on the calendar and read additional information.
Every woman deals with menstruation once a month. This event shows how healthy a woman is, and not only from a reproductive point of view. For this reason, you need to be able to correctly maintain your personal monthly calendar.
Physiology of the menstrual cycle, what is menstruation?
Menstrual cycle - regular, very complex physiological process, which repeats once every 21-30 days (but most often it is 28 days). The menstrual cycle manifests itself as, in fact, menstruation (blood discharge from the uterus). Menstruation usually starts at the age of 11-15 years and ends already during menopause around 45-55 years. Also, there are no periods during pregnancy and lactation.
The menstrual cycle is regulated the most complex processes, originating in our brain, where special substances are produced. These substances affect the entire female body!!!, but most of all on the ovaries and uterus. A follicle matures in the ovaries, containing an egg, which after some time enters the abdominal cavity, and then into fallopian tube- this is ovulation. If a woman’s menstrual cycle lasts 28 days, then ovulation will occur on days 13-15 from the beginning of the cycle. During the menstrual cycle, the uterus also prepares for conception under the influence of hormones: the walls thicken, and a special layer of the endometrium begins to grow. If there is no conception, then the female body gets rid of “options” that it no longer needs, such as the endometrium through menstruation. Menstruation itself (blood discharge) lasts from 3 to 7 days. Before menstruation, women may experience increased heart rate, increased blood pressure, and irritability.
The menstrual cycle can change or be disrupted due to nervous overload and stress, illness (even the simplest colds), excessively strict diets or, conversely, overeating. Menstrual irregularities do not always mean the absence of menstruation. Can also be very copious discharge, can be scanty discharge or changing cycle length.
How to keep a calendar of the menstrual cycle (periods)?
First day menstrual cycle - this is the first day of menstruation.
Last day the menstrual cycle is again the first day of menstruation, but the next one.
There must be between them 25-30 days. If there are fewer or more days, see a doctor immediately!
Ovulation(egg release) occurs on days 13-15 from the first day of the menstrual cycle.
Ways to maintain a menstrual cycle calendar.
The easiest way is to have a pocket calendar and use a permanent marker (write on lamination) to mark the days.
Another great way is to download a special application for your smartphone. There is definitely one for Android. There you are asked to enter the first and last day of the cycle, and the program will calculate everything itself. You can even make a planner showing “safe days” if you need to protect yourself, and ovulation if you want to have a baby.
Interesting facts about the menstrual cycle.
- The menstrual cycle is observed only in human women and female great apes.
- There are statistics that the likelihood of conceiving a boy is higher if the fusion of the egg and sperm occurs in the middle of ovulation, and a girl - if the sperm enters the female body a couple of days before ovulation.
- There are frequent cases of conception on “safe days”. So this is a dubious contraceptive option.
- A menstrual calendar helps you find out your due date. Pregnancy lasts 280 lunar days(this is 24 hours and 48 minutes), or approximately 290 ordinary days. This day must be added to the date of conception.
- Menstruation is also called REGULA
- If several women live together, their menstrual cycle becomes almost the same.
- During menstruation, the female body secretes special substances that kill yeast cells. Therefore, in ancient times, girls were not allowed to pickle cabbage during the “red days of the calendar”.
- Modern gaskets with adhesive strips appeared only in 1971. In 1945, pads were secured using belts, but there were already tampons))). And even earlier they used matter in general.