Menstruation usually occurs 1-2 months after hysteroscopy, but there are many factors that affect the onset of menstruation. If you do not have menstruation 2 months after hysteroscopy, it may be mainly related to the hysteroscopic procedure, drugs, pregnancy and postoperative care. 1. Procedure: simple hysteroscopy has less effect on the endometrium, and menstruation will come normally according to the original rule; if hysteroscopy is performed, as the endometrium has been scraped, it takes some time for the endometrium to repair and grow again, and most of them will In case of hysteroscopic adhesions, hysteroscopic separation of adhesions may lead to late resumption of menstruation after surgery. 2. Drug factors: Some patients are given progestins after hysteroscopy, which can lead to atrophy of the endometrium and cause menstrual disorders in women. If you have sex after the operation and do not pay attention to contraception, it may be pregnancy that causes no menstruation. It is recommended to carry out a pregnancy test by means of a pregnancy stick, if the stick shows two red bars, it basically indicates that you are pregnant. If the level of HCG exceeds the normal range, it indicates pregnancy; 4. Other factors: women do not pay attention to the postoperative period and have sex too early, which leads to infection or damage to the uterine cavity and slows down the normal recovery of the endometrium; or they are tired, depressed and have irregular work and rest, these factors can lead to endocrine disorders and thus delayed menstruation. It is recommended not to have sex too early after hysteroscopy, prohibit sex for 1 month after surgery, do not take a tub bath to avoid infection, pay attention to rest and keep a happy mood. Regardless of the cause, it is important to seek medical evaluation to find the cause of future menstruation 2 months after surgery to avoid delaying the condition.