I'm 15 and i got my period when I was 13 and ever since I've had my period I always get the absolute worst cramps and I throw up almost every time I get my period on the first day, I also get extremly cold and shake and my joints hurt so I sit in a steaming hot bath until they become a little less painful and then I lay down with a heating pad. I can't keep dealing with this its so painful what do I do?