I always used to have really bad heavy periods till I was put on birth control and the first BC I was put on was the pill and it was supposed to help regulate but in stead I got light periods with dark brown blood and really bad blood clots and would stay on it for 2 weeks at a time with only 3 days off before I started again well eventually I changed BC and got the IUD 2 months ago was a year since I got it and during that year I never had a period but these past 2 months I've had periods and they hurt really bad and they're really dark brown with bad blood clots is this normal why dont I have red blood? And why's it so light I mean I can't even wear a tampon light