What would an OBGYN prescribe for SEVERE PMS?

Im not talking light mood swings, and bad cramping... IM TALKING I WANT TO PISS PEOPLE OFF! For the past year my mood goes from completely happy (off the charts happiness) to COMPLETE ********* (worse than anything imaginable) when I start to PMS. But ONLY when Im PMSing. I cant control it, I cant stop it, My heart rate goes up, my palms start sweating and I will CUSS people out SO BAD who did something SO SMALL! Normal things that would NEVER make me mad, put me in the RED ZONE in NO TIME. I have regular cramping before my period and SEVERE cramping the first 2 days of. I swear... Im normally a VERY NICE girl/wife/stepmom. But when IM PMSing... Nothing can control me. Some info: I work out regularly, I have a normal drive, I eat healthy (including lots of veggies, fruits, grains..etc..) This problem is all consuming and I dont know what could help- So Im wondering what the DOC will prescribe someone like me. Thanks