The reappearance of vaginal bleeding a few days after menstruation is a kind of abnormal vaginal bleeding. For this situation generally need to consider the following: First, need to consider gynecological diseases, especially cervical diseases. Women with severe cervical erosion, cervical polyps, and malignant lesions of the cervix are prone to abnormal vaginal bleeding. Secondly, if the ovarian function is unstable, rest is not good, suffered a relatively large emotional stimulation, etc., affecting the ovarian function, will also appear irregular bleeding. Thirdly, some women who have a birth control ring or who are experiencing ovulation may also experience a small amount of bleeding. No matter which situation causes the bleeding should be taken seriously, it is recommended to go to the hospital for cervical and ultrasound examination.