Actually I had a full blown panic attack one night caused by drugs unintentionally taken at a party (don't drink the punch...). It felt like a heart-attack , or a stroke. It felt very real - and since that night i've been somewhat fearing having another "attack." this happened about four months ago, and I had several panic attacks since then.

I felt pinching and sharp pains in my chest for several months. I do believe it was caused by my anxiety - as i've had plenty of ekgs, bloodwork, ect... All of the tests came out completely normal. I wouldn't pay it any mind unless it starts happening frequently (or if new symptoms develop).