I sincerely hope you're not really having a heart attack. I made the same stupid mistake a while ago off caffeine pills, snorted two (what was I thinking??!) and swallowed 3. I had about an hour of wierd spastic hyperactivity (which is really unusual for me, i'm always a mellow guy) followed by 5 hours of horrible nausea and nastyness. The only thing that helped was a little water and going outside, breathing fresh air.