Help me please!!! My cramps are killing me, literally.?

My cramps hurt so bad that i have to go to the E.R. heating pads dont work, i eat Midol, Advil, Muscle relaxers like skittles nothing and i mean NOTHING works. i cant eat, and the whole time im on my period im laying in bed balling my eyes out and cant move. I get so scared when im about to start. i feel like im going to die when im pmsing. I was put on birth control but that only led me to the same place ( the E.R ) the birth control made me sicker then before. please im desperate for some help on what to do. Please give me an answer.