Increased menstrual flow in the first IUD is usually a side effect of the IUD or an abnormal position, or it may be combined with other diseases, so you need to make a correct judgment and deal with the cause. Common causes and treatment I. IUD factors 1, side effects: can stimulate the endometrial thickening, resulting in increased menstrual flow, prolonged periods or spotting bleeding, generally do not need to deal with, about 3 months to recover. When the bleeding is slightly large or uneasy, you can take drugs to stop bleeding, such as tranexamic acid, bleeding more than that may indicate that it is not suitable to wear the IUD, should be promptly removed after hospital examination, replace other forms of contraception; 2, intrauterine device position abnormalities: such as dislodgement, can cause bleeding, often accompanied by abdominal pain, causing infection can have symptoms of fever, general vaginal ultrasound can confirm the diagnosis, should be removed after the IUD re-matching band, and observation under vaginal ultrasound. And under the vaginal ultrasound observation, to ensure the correct position. 2, disease factors: IUD first month menstrual volume may not be caused by the IUD, may be due to the patient’s own endometrial polyps, endometriosis and other diseases caused by menstrual volume, need to be treated according to the cause. 1, endometrial polyps: estrogen level is too high or infection and other reasons, can have increased menstrual performance; 2, endometriosis: may be related to immunity, genetics, can have increased menstrual performance, 2, endometriosis. There can be increased menstruation. Non-steroidal drugs such as indomethacin and ibuprofen can be applied to treat dysmenorrhea, and hormonal drugs such as progesterone and pregnenolone can be used; 3. Other: there are many kinds of diseases that can cause heavy vaginal bleeding, such as submucosal fibroids and endocrine disorders, which need to be judged according to other physical characteristics and hospital examination. Note: After the IUD is placed, you should pay attention to less heavy physical activities, avoid walking, sitting or standing for a long time, and not to have intercourse or take a bath when there is vaginal bleeding for 4 months after placement.