How to get rid of HORRIBLE period cramps?

Everytime I have my period, the first and second days' cramps are SO BAD that I can't walk. Sometimes the only time it doesn't hurt is when I don't breathe =P pathetic lol but I've tried everything! Hot baths, hot tea, heating pad on my belly, Pamprin, Midol. Nothing works. They're so bad that I cry and I actually have a high pain tolerance but this HURTS! Please help. I've thought about the birth control shot but I've tried to talk to my mom but I have a boyfriend and she never gave me a yes or no answer about it so I think she thinks I wanna have sex. I'm only fourteen! I just want my cramps to stop!