I have two suggestions that any of you with prolonged periods can look into:

1) Uterine fibroids. They are non-cancerous growths that sometimes can cause prolonged and heavy bleeding. I had them five years ago; I had them surgically removed. My doctor told me it was stress and I should exercise. I INSISTED on an ultrasound after I had my period for 32 days in a row and once again he told me it was probably nothing.

2) Endometriosis. It has to do with the uterine lining being elsewhere in the body. I don't know how or when it usually starts in women, but a symptom of it is heavy bleeding and/or very painful periods. My best friend had it; it stopped when she had her first child.

Insist on getting an ultrasound - no matter what!!