Ovulation bleeding is usually 3-5 days will be clean, and the amount of bleeding will not exceed the amount of menstruation, is relatively small, basic use of pads can be. In addition, the bleeding does not need to be treated and can stop on its own. Ovulatory bleeding is mainly due to a temporary drop in estrogen and progesterone during ovulation, which causes the endometrium to temporarily lose the support of estrogen and progesterone, resulting in withdrawal bleeding. When the estrogen and progesterone levels return to their original levels, the bleeding stops naturally and the endometrium is completely repaired. Therefore, ovulatory bleeding is usually cleared in 3-5 days. If ovulatory bleeding is frequent, clinical intervention is needed.