The first thing you should consider is whether it is a real menstruation or not. The main considerations are related to ovulation bleeding, vaginitis, frequent menstruation, reproductive system tumor and other factors. 1. Ovulation bleeding: Ovulation bleeding occurs about 14 days after the last menstrual period, and the amount of bleeding at this time is relatively small, often manifested as blood in the leukorrhea, brown leukorrhea, or dribbling bleeding, which is mainly caused by hormonal secretion abnormality in the ovulation period. 2. Vaginitis: vaginitis is mainly caused by bacteria, fungi, protozoa and other infections, often manifested as vulvar itching, increased secretion with odor, and in severe cases, bleeding can also occur, similar to the performance of menstruation. 3. Frequent menstruation or prolonged menstruation: If the ovary function is poor, the luteal function is insufficient in the near menopause, resulting in hormone secretion imbalance. In addition, suffering from uterine fibroids, endometrial polyps and other diseases, the above symptoms may occur. 4. Reproductive system tumor diseases: patients with reproductive system tumors such as endometrial cancer, cervical cancer, etc., mostly occurring in older women, may also have the manifestation of irregular vaginal bleeding. If you find abnormal vaginal bleeding, you should go to the gynecology department of the hospital in time to improve the relevant examination and then intervene in the treatment.