Why Am I Still Bleeding Almost 2 Months After A D And C Due To A Miscarriage While On Novelon?

Hi, i done my D&c on 21 oct third month of miscarriage. After that i occured heavy pain again done a d& c on 31 oct. Now it s 57 days after my d&c but still bleeding occurs. My doc suggested novelon tab now am taking this tablet for 2 days but still I bleed. Why did happens