My withdrawal bleed lasted 7 days, ended last Friday, then started lightly bleeding 3 days ago.  Today as day 3. I'm waiting for blood work back, doctors think it's pcos, and are testing for other abnormality. But now I'm bleeding to wear in about two hours it will get on my panty liner. At first it was light pink with some brown, now it's dark red and has little tiny clots, tmi. Does any one know why I'm bleeding again. Before taking the Medroxyprogesterone I didn't get a period for 9 months and gained weight, which they think is a result in pcos. Anything is helpful! They should be calling me tomorrow to know for sure what's wrong. But I'm worried cause I'm bleeding again.