The reason for this is that in most cases the hysteroscopy is performed with dilatation of the cervical opening to facilitate the operation, and the endometrial scraping is performed during the hysteroscopy, which may result in vaginal bleeding after the operation. If you have intercourse too early, it will increase the possibility of pelvic infection, endometritis and other urinary tract infections, so you should not have intercourse at this time. Also, premature intercourse can increase the chance of endometriosis, even though it is not very likely, but it is still a possibility, so you should not have intercourse or take a bath for 1 month after the hysteroscopy.