The first time after the removal of the IUD large menstrual flow may be the removal of the IUD surgery, damage to the uterine lining caused by increased bleeding, but also may be the normal course of the surgery disinfection caused by gynecological infections, inflammation caused by upstream infection endometritis can also cause increased menstrual flow, after the removal of the IUD the changes in the intrauterine environment will affect the amount of menstrual flow, the need to use the IUD after the removal of the uterus without the ring of the environment will cause the proliferation of endometrial lining, resulting in an increase in the amount of menstrual flow, the second time will be back to normal. The second period will return to normal, it is best to observe. If you have been bleeding heavily, it may also be caused by uterine fibroids, ovarian cysts and so on, you can go to the hospital ultrasound, gynecological examination. If the cysts or tumors can be surgically removed, and if endometritis is caused by endometritis, it is best to treat with antibiotics, and at the same time, it is recommended to treat with medication to stop bleeding, so as to avoid excessive bleeding caused by anemia.