The IUD is usually reviewed at the 1st month, 3rd month and at the end of 1 year, and then just once a year thereafter. An IUD is an intrauterine device (IUD) placed in a woman’s uterine cavity, usually after her menstrual cycle has cleared and she is free of infections in the reproductive tract and is not sexually active. In the first month, three months, one year after the IUD is placed, you need to do a review of the IUD, and after that you can do a review once a year, mainly to check the IUD in the uterine cavity in the position of the appropriate and whether there is a related side effect, if it is determined that the position of the IUD is correct, then you can achieve the efficacy of contraception. Women should abstain from sexual intercourse for 1-2 weeks after the IUD is inserted. If sexual intercourse is started too early, it may lead to movement of the IUD’s position or infection.