It is not normal for menstruation to come again just a few days after the period, the main reasons may be the following: 1, the problem of ovulatory bleeding, ten days after the period will appear ovulation, many women in the ovulation period due to the body hormone secretion disorder, so there will be a small amount of endometrial shedding, belongs to the normal body situation, can not be too worried. 2, gynecological inflammation and other problems, such as cervicitis, pelvic inflammatory disease, etc., when the reaction of these diseases will lead to vaginal mucosa stimulation, and thus the symptoms of bleeding, When there is a reaction to these diseases, the vaginal mucosa will be stimulated and bleeding symptoms will occur. It is better to have anti-inflammatory treatment in time to relieve the bleeding problem. 3. It may be caused by functional bleeding of the uterus, malignant tumor or other physical diseases, it is recommended to go to the hospital for ultrasound examination and observe the physical symptoms.