Ovulation refers to the period of time when a woman's eggs are released from her ovaries, and usually lasts about 3-4 days. A woman may release multiple eggs during this time, so ovulation usually occurs about 14 days before her next period. However, every woman's menstrual cycle and physiological situation are different, so the specific date of ovulation may vary.

A woman's menstrual cycle is a complex process involving many factors such as genetics, diet, stress and health conditions. Therefore, if you want to understand your menstrual cycle and ovulation, it is best to talk to your doctor or professional health care provider.