I think Buffy is right on the mark. When I was younger I used to have the same thing. I went to several doctors and none of them got it right. I went through so many tests I felt like Frankenstein.
One day I was home sick from work and bored out of my skull, so I was checking out day time TV, which sucks. I stumbled on to some talk show about anxiety and panic disorder. Everything they described was happening to me. Shortness of breath, tightness in my chest, pain in my arms, tingling and numbness to my fingers, my face going numb, I felt like I was going to blackout and I thought if I did pass out I was going to die. Impending sense of doom they call it.
On the talk show they introduced people that suffered from it that were able to control it just by reminding themselves they were not dying and to take slow deep breaths. In through the nose and out through the mouth slowly. Try to distract yourself from the attack by watching TV or go out and do something, anything to get your mind off of it.
Since then I have never had another episode because when I feel it trying to happen I just do the breathing and then focus on other things and seconds later it?s gone.
I hope this helps, if it doesn?t seek medical attention. Don?t play around with it for too long though it could be other things.