Hi annoyedgrunt84,
I also recently had a panic attack (about a month ago), it it felt very much like a heart attack. In have not really taken care of myself over the past few years and heart disease sort of runs in my family, so naturally I had a serious nervous episode over the whole thing.
One thing that helped me a lot was visiting a doctor and getting checked out (heart, blood work) and most importantly ACCEPTING THE RESULTS OF THE TESTS. In my case, there were things I needed to work on, I made a plan and am working on them. I think this might help you as well, the proactivity, and knowing you are "working on it" may do a lot for your state of mind. At least it did for me.
Hoping you feel better my friend, and know you are not alone.
Del