I've gotten to the point where I'm comfortable and I know how to deal with my attacks. I just had one where I'm resting and all of a sudden my heart jumps into the 90's or 100's (normal for me is 58-64). I have sligjt chest pain and left arm pain and I have to get up and walk around to feel better and I sit down when its back down atleast into the 70's. I still feel like I'm having trouble breathing and my heart rate keeps fluctuating from 59-74 all within a few minutes and it's been doing this for the past half hour. Is this something I should worry about or is this just normal? Or is it all in my head like the doctors say.