What is the difference between ovulation day and ovulation period?

The difference between ovulation day and the ovulation period lies in the duration of time. The specific analysis is as follows:

Ovulation day refers to the day when the egg is released. In a normal menstrual cycle, counting backward 14 days from the first day of the next menstrual period gives the ovulation day. The ovulation period includes the 5 days before ovulation day, the 4 days after, and the ovulation day itself, totaling 10 days. Fertilization is more likely to occur during the ovulation period. Women may experience symptoms such as breast tenderness, lower abdominal heaviness or dull pain, and slight vaginal bleeding during this time. These symptoms typically last for 2–3 days and then gradually subside and disappear without requiring special treatment.

For those trying to conceive, having intercourse during the ovulation period can increase the chances of pregnancy. For individuals not planning pregnancy, contraceptive measures should be taken when having intercourse during the ovulation period.