Ovulation refers to a beautiful period of time in a woman's menstrual cycle, usually in the middle of two menstrual periods, that is, from the 14th to the 17th day of menstruation. For couples who want to have children, this period is the best time to get pregnant. However, for those who are not planning to have children, this period may not be necessary.

Generally speaking, eggs can survive in the body for about 48 hours after being released during a woman's menstrual cycle. During this period, women can choose to have intercourse on the day or the next day after the egg is released, so that the sperm can meet the egg, thereby increasing the chance of pregnancy.

However, the exact timing depends on a woman's menstrual cycle and health. Some women may release eggs three days before or three days after ovulation, so if a woman is unsure about her cycle or health, it's best to talk to her doctor in advance to determine the best time to have intercourse.

In addition, a woman's menstrual cycle is also affected by many factors, such as mood, diet and exercise. Therefore, even if a woman has a regular cycle, she may have fluctuations in ovulation. If a woman is unsure about her cycle or health, it's a good idea to talk to her doctor in advance to determine the best time to have intercourse.