Actually, we get a lot of traffic in Medical, believe it or not.

Slipknot, you need to go to the ER. Heart attacks aren't only felt on the left side. Frequently people have pain on the right as well. And it also sounds plausible that you could be having a gallbladder attack of some kind--or just muscle spasms. No one can diagnose you online, though, which is why you need to go ahead and visit the ER. The stakes are too high not to go ahead and play it safe!