The situation that the menstrual period has gone for seven or eight days and then comes again and the amount is not much, consider and ovulation bleeding, vaginitis, cervicitis and other factors related. 1. Ovulation bleeding: menstruation after seven or eight days and come back, and the amount is not a lot of cases, can not be ruled out due to ovulation bleeding, mainly and ovulation when the hormone level of women’s bodies decline, so it will cause a small amount of endometrial stripping, the symptoms of vaginal bleeding. 2. Vaginitis: if a woman has vaginitis, the inflammation may invade the vaginal mucosa, resulting in vaginal mucosal erosion and bleeding, so the patient will have a menstrual period for seven or eight days and then come back to a small amount of symptoms. 3. Cervicitis: when women have inflammation of the vaginal part of the cervix and the mucous membrane of the cervical canal, there is usually an increase in vaginal discharge and abnormal vaginal bleeding, especially a small amount of bleeding after sexual intercourse or bleeding between menstrual periods. In the case of the above symptoms, other causes cannot be ruled out, so you should go to the hospital and cooperate with the doctor to complete the examination and determine the cause before treatment and therapy.