Really bad cramps and pms!?

i get pms and cramps really bad, but stuff like pamrin doesnt help! i use a heating pad and watch a chick flick sometimes, but i cant always do that kinda stuff at my dads house bc he doesnt understand, he just tells me to suck it up and tough it out! idk wat to do! no medicine helps! i also get really pissy (pardon my language) at that time of the month..