In each monthly cycle, there is only one interval during which a woman can become pregnant.
Using this information, you can both avoid an unwanted pregnancy and bring the long-awaited motherhood closer.
To do this, you need to calculate ovulation (the time of maturation and release of a female germ cell) by one of the existing methods and follow the resulting schedule.
General information about ovulation
Ovulation is the process in which a mature and fully ready female germ cell leaves the ovary and enters the lumen of the fallopian tube (cavity connecting the vagina and uterus).
After ovulation, the cell is capable of conception within 12-24 hours, and it is during this period that there is a maximum probability of conception.
The day before ovulation, the possibility of conception is approximately 31%, 2 days before ovulation – 27%, 3-4 days – 16-14%.
Thus, conception 6 days before ovulation and the day after it is almost impossible or extremely unlikely.
Under the influence of female hormones, ovulation occurs between the 14th and 16th day of the monthly cycle.
That is, in order to approximately calculate ovulation, you need to either add 14 days to the day of menstruation, or subtract them from the estimated day of the next cycle.
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How to calculate ovulation using a calculator
In order to facilitate calculations, you can use the online ovulation calculator, which is a convenient way to keep a conception calendar.
How to calculate ovulation online using a special calculator? Click here.
There is nothing complicated in this. It is enough to enter data on the date of the last menstruation, the average length of the menstrual cycle and the number of cycles to be calculated.
After that, the program automatically calculates the ovulation calendar.
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According to ultrasound
Ovulation itself can be very unstable, as it is affected by a number of factors. Any calendars can be wrong.
The most likely way to calculate ovulation is ultrasound, on which before ovulation you will see a growing follicle (a bubble in which a female germ cell matures), and after it – a corpus luteum formed at the site of the cell (a temporary gland that forms after ovulation).
How to calculate ovulation by basal temperature
The ovulation schedule can be made based on the results of measuring the basal temperature, that is, the lowest body temperature measured after sleep.
To do this, it is necessary to measure the rectal temperature (temperature in the rectum) every morning for 3 months and record the data obtained in the table.
During ovulation, the temperature in the rectum rises due to an increase in the amount of female hormones in the woman’s body.
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Calculation of ovulation by test strips
Special test strips help to determine the time of ovulation based on the amount of luteinizing (responsible for the proper functioning of the female reproductive system) hormone in the urine, which increases the day before a favorable time for conception.
You need to start using such tests 3 days before the middle of the cycle.
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Determination of the day of ovulation by sensations and secretions
No matter what methods exist for calculating ovulation, first of all, you need to be guided by your own feelings.
The body always sends signals about its readiness for conception: sexual drive increases, there are more discharges from the vagina, which become more viscous and thick.
Sometimes there is a pulling pain in the lower abdomen or in the area of the ovary in which the female germ cell has matured.