For almost a year now I have been having irregular heart beats...not like a premature ventricular contraction but more atrial in nature. It seems to only happen with excercise or initialing standing. I am 40 and wonder if it could be my thyroid. As with most peoples complaints I have read...I too have seen my doctor last year whom said "ALL IS WELL" yet how can all be well when this happens all the time!! Isn't there a pill for this? It has impacted on my excercising which is the only thing that helps with overall feeling well. Once again today I had to get off the treadmill after only 20 minutes because of the frequency of the flutters. How could this be classified as "NORMAL". It has made me feel abnormal and impacted on my family whom think I am "CRAZY".....HELP!!!