Fibroids can grow on the inside of the uterus, within the muscle wall of the uterus, or on the outer surface of the uterus. Many women who have uterine fibroids do not have symptoms. When symptoms are present, they can include: Abnormal vaginal bleeding, such as heavier, longer periods or bleeding between periods.

How long does fibroid bleeding last?

Those with fibroids and heavy, irregular periods may experience bleeding that lasts for longer than eight days, with more than two to three days of heavy bleeding at the outset. In addition to blood clots in your flow, fibroids can cause spotting in between periods.

What happens when a fibroid bleeds?

Uterine fibroids may put pressure against the uterine lining, which can cause more bleeding than usual. The uterus may not contract properly, which means it can't stop the bleeding. Fibroids may stimulate the growth of blood vessels, which contributes to heavier or irregular periods and spotting between periods.