I am 28 years old i have had a period since i was 12 its always been the same 1 to 2 a year and bleading for 2 to 3 months with small ( dime size) to large (silver dollar size) clots comming out. but it also comes with theese cramps that are so bad i can go from standing to on the ground without warning holding my sides wishing it would stop i went to many doctors over the years and they said your young it will pass or your over whieght loose the fat and it will all straighten itself out is this normal or is there somthing wrong with me?