Ovulation bleeding means that during ovulation, a woman's vagina will discharge a small amount of blood. This bleeding phenomenon is called ovulation bleeding. While this phenomenon is relatively common, it's not always normal.

1. Hormone changes in the body: During ovulation, the hormone levels in a woman’s body will change, causing vaginal bleeding. This change is due to a decrease in estrogen and progesterone levels in a woman's body after the ovaries release eggs, and estrogen and progesterone are important factors in maintaining female fertility.

2. Vaginal flora imbalance: If a woman’s vaginal flora is imbalanced, it can also lead to ovulation bleeding. Imbalance of vaginal flora may lead to vaginal infections, which may affect fertility.

3. Other diseases: Certain diseases, such as anemia, cervical disease, endometrial disease, etc., may also cause ovulation bleeding.

Effects of ovulation bleeding:

1. Impact on fertility: Bleeding during ovulation may lead to decreased fertility in women because bleeding reduces the number of mirrors in a woman's body.

2. Increased psychological stress: Bleeding during ovulation may make women feel anxious and uneasy, increasing psychological stress.

3. Treatment required: If a woman frequently experiences ovulation bleeding, she may need treatment. Treatment may include medications or surgery.

So while ovulation bleeding is a common occurrence, it's not always normal. If women experience frequent ovulation bleeding, they should seek medical attention promptly to find out whether there are other health problems.