In most cases, the removal of the birth control ring will not affect a woman’s menstruation, but in the process of the removal of the birth control ring, if the following two situations occur, it will affect a woman’s menstruation: First, there is an infection of the uterine cavity at the time of the removal of the birth control ring, which will affect a woman’s menstruation. In the acute stage of uterine infection, the patient may experience abdominal pain and abnormal vaginal bleeding. In the chronic stage of uterine infection, that is, the chronic inflammation stage, the patient’s uterine lining will be damaged, and there may be adhesions of the uterine lining, leading to the patient’s menstrual flow, or even amenorrhea. Secondly, in the process of removing the IUD, if the endometrium of the patient is excessively damaged, the patient may suffer from scanty menstruation, amenorrhea, secondary infertility and so on. If the process of removing the birth control ring is not smooth, many doctors will scrape the uterus at the same time, which may damage the patient’s uterine lining and may cause abnormal menstruation.