The hazards of not removing the IUD include unplanned pregnancy, ring embedding and uterine perforation. 1. Unintended pregnancy: birth control rings have a certain period of use, if the ring is not removed and replaced in time after the expiration of the period, it may lose its contraceptive effect, thus leading to unwanted pregnancy. 2. Ring embedded. If the IUD is worn for too long and not removed after the expiration date, the IUD may be deformed and embedded in the uterus, resulting in irregular vaginal bleeding or abdominal pain and other discomforts. 3. Uterine perforation. After menopause, the uterus shrinks due to the decrease of estrogen level, and if the IUD is not removed, it will keep stimulating the uterine cavity, grow into the flesh, and even perforate the uterus, jeopardizing women’s health. After the expiration of the birth control ring or postmenopausal women should remove the ring in time to avoid jeopardizing their health.