Lately I've been getting near panic attacks everyday. I've been able to use relaxation techniques to stop.

I've gone to the emergency room twice now for bad ones. Heart feels like it's going to pop out of my chest and I think I'll die when this happens. What can I do? I've never had these before. It may be meds that I take, but it seems anxiety sets it off and then my pulse runs away like I'm on crack or something. VERY SCARY!