I've been feeling a rapid heart beat for about a week, laying down in bed my pulse was 115 bpm, yesterday I went to my endocrinologist ( I'm a diabetic type 1 for 16 years ) everything with my diabetes is good, I had a pulse of 124 bpm while in the doctor's office, he ordered an EKG right there and saw everything is ok with my heart, every time I feel my heart beating so fast I get really scared and I started getting a little dizzy, there's no pain at all. What should I do? should I go back to my doctor? I know this is not normal, should I go to the hospital? Thanks a lot.