I'm 28 and every since I could remember I have had excessively heavy periods with lots of clots. Extreme back pain is also norman for me. My period usually lasts for 5-7 days but for the few months my periods have been crazy, almost black colored but still heavy and sometimes one day there'll be almost nothing and the next, overbearing bleeding. However I had a period for 9 days then for 1 week nothing and I started again and it's heavy. I have read that it could be fibroids..... Anyone with any similar experience please fyi me. Thank you