See a cardiologist (heart Dr.). My heart use to pound and race all the time, so bad I could not get to sleep at night. I had the EkG, etc. all was fine. I started taking Vitamin E (natural form) and within 24 hours my palpitations stopped and have not returned. Please check with your Dr. before you start any vitamin regiment. Vitamin E has a great track record for heart palps, skin problems, metabolism problems, etc.
Gem