There are numerous potential causes of uterine bleeding, including: - Hormonal Imbalances: Disruptions in the balance of estrogen and progesterone can cause abnormal bleeding. - Fibroids: Noncancerous growths in the uterus that can cause heavy menstrual bleeding. - Polyps: Growths on the inner wall of the uterus that can lead to bleeding. - Endometriosis: A condition where the tissue that normally lines the uterus grows outside of it, causing bleeding and pain. - Adenomyosis: When the tissue that normally lines the uterus grows into the muscular wall of the uterus. - Pregnancy Complications: Such as miscarriage or ectopic pregnancy. - Cancer: Uterine, cervical, or endometrial cancer can cause abnormal bleeding.