How to calculate ovulation when 31 days after menstruation?

Generally, a woman's menstrual cycle lasts 28 days, but some may have it longer or shorter. During the cycle, a woman's ovary releases an egg and waits about 7-10 days for it to mature. At this time, a woman's menstrual cycle ends and the next one begins.

To calculate when a woman is ovulating, she needs to know her cycle time and the length of her period. For women with a 31-day menstrual period, their cycle is about 38 days, so their ovulation period is approximately between day 16 and day 23 of the cycle.

Here are some ways to calculate ovulation:

1. Use the calendar method: Plot the cycle dates of a woman with a 31-day menstrual period on a calendar and record the number of days between each date. Then, subtract 14 days from each month's date to arrive at the woman's next date. At this time, a woman's menstrual cycle ends and the next one begins.

2. Use the basal body temperature method: measure the woman's basal body temperature and record each temperature value. When the body temperature rises by 0.3-0.5 degrees Celsius, it is usually a woman's ovulation period. This method requires taking the temperature every day and recording it in a form.

3. Use the David brand pregnancy test stick: The David brand pregnancy test stick is a commonly used pregnancy test tool that can test whether a woman is pregnant during her ovulation period. The method of use is very simple, just insert the pregnancy test stick into the vagina and wait for a few seconds to get the result.

No matter which method is used, it is very important to calculate when a woman is ovulating. If you want to get pregnant, you can have sexual intercourse during this period and try to get the sperm as deep into the woman's uterus as possible. In addition, care should be taken to avoid sexual intercourse during this period to avoid pregnancy or infection.