Dude, that's wierd because I have pretty much the same problem youre describing, exactly the same really. Feels like someone is working my stomach like a set of chinese exercise balls. It feels like a cramp building up, then it growls and releases the pain. Almost like a painful hunger. I actually find that zantac helps sometimes. I had a doctor tell me its something called 'gastrointestinitis' or something. Try taking something for heartburn or indigestion.