If you have intercourse too early, it may have the following adverse effects on the patient: First, when the IUD is just removed, there is vaginal bleeding and blood is the best petri dish for bacteria. During the process of IUD removal, when the cervix is dilated with a dilation rod, it will cause the patient’s cervix to relax, which is especially prone to infection during intercourse, vaginal inflammatory diseases and pelvic inflammatory diseases due to upstream infection. Secondly, after the IUD is removed, the endometrium will be damaged and cannot be fully repaired within a short period of time. If the patient conceives during intercourse within one month after the IUD is removed, the embryonic implantation will be affected, and the embryo will easily have a pre-miscarriage or stop developing, which is a kind of damage to the patient.