Extreme cramps!!

I am only 15 and I started my period when I was around 9 or 10. I have always had really bad cramps but here lately they have been unbearable! I take midol but it helps very little and for a very short amount of time. I have also taken some stronger medication like naproxen and it does the same thing. I would really like to get these under control because of sports and the fact that's it's really uncomfortable in general. I need some advice on things that may help. Any suggestions?