Retreating bleeding if the amount is more may be caused by the following reasons: First, the coagulation function has a problem, so the endometrium shedding will cause more bleeding, it is recommended to do the blood routine and coagulation time of the laboratory tests, to understand whether it is the cause of this aspect. Second, the body’s hormone level is insufficient, because of estrogen insufficiency after the endometrial shedding, if you want to stop the bleeding needs endometrial repair, estrogen insufficiency when the endometrial repair time will be prolonged, so there will be bleeding phenomenon, when necessary, check the sex hormone six to understand the endocrine situation, and then decide whether to use drugs to treat.