11 day heavy period..early miscarriage?

Danai • 25, PCOS, Single
I have PCOS.. I have irregular periods and the one I've just had is my third one this year. I had a long period like heavy bleeding for 11 days then after that I had like a bit of blood with my cm it wasnt too much blood. Now I am on cd13 today and I'm feeling a bit of cramping but not too much. I dont know if anyone has ever had this. The doctor prescribed me these pills to stop the bleeding that was all she never asked if I could have been pregnant I don't know what to think :/