Hi there, Thanks for writing in, I am a cardiologist and read your mail with diligence. You do not have to worry if: 1. Heart Flutters occurring with exercise and EKG done (when fluttering was there) was reported fine. 2. You do not get any light headedness, black out or blurring of vision when fluttering occurs. 3. Fluttering usually does not occur when you are resting You have cause for concern but not of panic: 1. If any of the above statement is wrong. 2. Fluttering occurs only during exercise and it is associated with chest pain. 3. Fluttering occurs during rest, comes like bolt from blue and disappears as abruptly as it started. In that event, you need to consult a general practitioner not necessary a specialist and after physical examination and heart examination let your doctor get basic investigations done which includes EKG, TMT and or Holter (remember to do good exercise while Holter is on). As you have not been examined physically it is not fair to make a diagnosis of any illness without the basic examination so Health Care Magic can only provide suggestions, Personally I feel that you do not have any serious illness, you have sinus tachycardia, which does not need more cardiology work up than suggested. With Best Wishes Dr Anil Grover Cardiologist