I stopped taking Cerazette in March after starting HRT. I had three heavy periods then decided to go back on it. That was end of June. I had no bleeding until 31st August evening and I am still bleeding 12 days on. I am worried to death. It started very dark, almost black but is now bright red with clots. It's not heavy but I have to wear pads day and night. I think it must be the pill but my health anxiety has kicked in and I am convinced I have cancer.