After the IUD, since the IUD is a foreign body, it takes a process to adapt in the uterine cavity, and the presence of early menstruation can also cause delayed menstruation and abnormal bleeding during non-menstrual periods, which is a normal phenomenon. As long as the early 3-5 days is considered normal, as far as possible, first observe the amount of menstruation, some women after the IUD will cause more menstruation, according to the situation of the appropriate amount of oral hemostatic drugs, to avoid causing inflammation of the endometrium, but also cause the chance of anemia. In the future, you should observe whether there is abnormal bleeding during the non-menstrual period, because it is a typical adverse reaction after IUI, and if it exists, you should take oral hemostatic drugs in time to avoid affecting your health. The adaptation process after IUI takes about six months or seven months, according to your own situation for observation.