If you have a prolonged menstrual period after the IUD, you can take oral antirelin or tranexamic acid to treat the symptoms. The bleeding can be stopped after 3 consecutive days. Because the area of the endometrium increases after the IUD is inserted, the prolonged menstrual period may occur. The main purpose is to find out whether the prolonged menstrual period is caused by endocrine disorders. Depending on the results of the test, you may be able to improve the situation by taking the appropriate medication.