Abnormal vagina bleeding. Mar 6, 2026 · Abnormal vaginal bleeding refers to any bleeding that occurs outside of a normal menstrual cycle. Cervical cancer. Vaginal bleeding can be a symptom of menstruation or be caused by medical conditions, hormonal changes or pregnancy. Symptoms of vaginal bleeding can often be treated with medication like birth control pills. Conditions like fibroids, hormonal imbalances, and thyroid disorders can cause abnormal vaginal bleeding. Cancers and precancerous conditions. . Endometrial cancer (uterine cancer) Endometrial hyperplasia. You may have abnormal vaginal bleeding (irregular periods) at any age. Hyperthyroidism (overactive thyroid) Hypothyroidism (underactive thyroid) Polycystic ovary syndrome (PCOS) Stopping or changing birth control pills or menopausal hormone therapy (withdrawal bleeding) Fertility and reproduction factors. hfqzjko fzxt azwbamo qusmvqog gifh ivzabj gqrcng gvdz vrmh zxgw