Calculation of PDR by the date of conception
The basis for this method is the day of ovulation. The egg, which leaves the follicle at this time, lives a day. If the girl knows on what day she had ovulation, she easily makes the necessary calculations. Usually such accurate information is available to those who previously planned pregnancy. They are helped in this by ultrasound, basal temperature measurements, special tests. It is wrong to believe that fertilization necessarily takes place on the day of sexual intercourse. Spermatozoon can be viable in the female body for several days.
To learn PDR by the date of conception, it is necessary to find out when ovulation occurred in the last menstrual cycle . Most often it is in the middle of the cycle, although deviations may be possible in different directions. Also, some of their own sensations and changes in the body can testify to it:
- transparent vaginal discharge, which intensify at this time;
- stomach ache;
- increased libido.
Count PDR by the date of conception can be, if you add to the day of ovulation 280 days. Some make the mistake of adding 9 months. This is wrong, since the pregnancy lasts 10 lunar months, that is 280 days. There are also special online calculators that help with these calculations. They can be used by anyone. It is enough to enter the expected date of ovulation and the program will automatically output the result.
But it is worth considering that the PDR by the date of conception is not accurate, especially if the girl's menstrual cycle is not regular.