I had my first panic attack with weird heart palpitations.when I had my first panic attack with multiple heart palpitations,i was really shocked and I thought it was heart attack.after that I consulted a doctor and he conducted some basic tests like ecg,chest x-ray,endoscopy and everything was come normal.after that I had experienced these panic attacks regularly which are accompanied with shortness of breath,racing heart rate(120-150bpm), seating,dizziness,fatigue.among all the symptoms I was mostly terrified by racing heart which is run like bull in my heart and it's make me passing out problem.during the travelling I don't know ,how many times I got down from bus or car in the middle of journey bcoz these heart palpitations and racing heart.
Hi. I have the same thing. Seems you are coping alot better then me. I cant leave the house because of the fear of fainting. But have found breathing exercises have helped a little bit. Youtube it and hopefully it helps you.
It may be due to anxiety but only a dr can make that diagnosis following ecgs etc.