How many days does ovulation last? - Popularization of science

However, for many women, it is difficult for them to accurately determine when they are ovulating. This is because a woman’s menstrual cycle is affected by a variety of factors, such as diet, exercise, stress, hormone levels, and more. As a result, some people may miss their ovulation period or have multiple sexual intercourses during it, resulting in failure to fertilize.

So, how to determine ovulation? Here's how:

1. Measure basal body temperature: When women wake up every morning, measure their oral or anal body temperature. Basal body temperature can be recorded on a thermometer and analyzed after the cycle. Generally speaking, a woman's basal body temperature will rise between day 14 and day 21 of her cycle, indicating that she is about to enter ovulation.

2. Observe the secretion: During the ovulation period, a woman’s vaginal secretion will increase, become darker in color, and appear clear and transparent. These changes can be detected by observing a woman's vaginal discharge.

3. Use an egg tester: For women who want to become pregnant, an egg tester can be used to detect whether the woman's eggs are mature and ready to be released. Ovometers can detect egg maturity by measuring hormone levels in a woman's body.

The above methods can help women determine their ovulation period and have sexual intercourse during this period to increase the chance of fertilization. However, these methods are not suitable for all women because everyone's physiological processes are different. So if you're not sure whether you're ovulating, talk to your doctor or medical professional.