The end of menstruation and then bleeding is related to pregnancy. Some people who are pregnant will have abnormal vaginal bleeding, which many people mistake for menstruation, and ultrasound may be performed to avoid the risk of abortion. Bleeding again after menstruation is related to endometrial lesions, such as endometrial polyps and uterine fibroids, which can cause abnormal uterine bleeding. Bleeding again after menstruation is over is related to menstrual irregularities, and hormone levels can be checked. Ovulatory bleeding should also be considered. Ovulatory bleeding is affected by hormonal changes in the body about 14 days before menstruation and can cause partial shedding of the endometrium, resulting in bleeding, but the amount of bleeding is not large and will recover on its own after 2-3 days. If you have abnormal vaginal bleeding, you should pay attention to it and have a timely examination to determine the cause of the problem.