I am 25 yrs old and I gained weight last year and my period stopped for 5 months, my period returned in April of 2010 for the entire month and again in June 2010; I have been on my period since June, it is now October 28th. I got blood work, and a pelvic sonogram last month, both returned normal. My period is heavy some weeks and meaty clots are constantly coming out. Is this because I went months without a period and am now losing weight? Please help me.