More and more frequently the first day of my period has been terrible !! I've gotten cramps since the first year of my period and know how to deal with them. Once or twice the on first day I've had excruciating cramp pain but now it's happening every period and it's to the point where I miss school. I sweat a lot and my body shakes and it's just gotten worse and worse. I know a doctor is the best idea, and I'm defiantly going to see a doctor but does anyone have any clue at all to what it may be ?