I am having constant chest pain and frequent palpitations with heart rate >90 bpm constantly.. 2d echo and tmt test were conducted six months back and found to be normal.. one week back ecg test was done and it showed as probable left artial Abnormality.. and doctor ordered 2d echo and all are with in normal limits. I not able to diagnose the exact cause for this situation. I am also experiencing heart flutter continuously.. my tsh is 2.5 which was checked 2 weeks back. And my thyroid values vary very frequently despite taking continous medication.pls help me out..