Firstly Im 22 and in great shape. No steroids drugs and just occasional alcohol. I had 3 hospitalizations for A-fib 1 being alcohol related and the other 2 because I gagged and/or choked. I havent had an episode for over a year. I have high blood pressure and on meds. These symptoms were with me for over 5 years and did not start when I began meds. I contstantly have strange palpitations throughout the day. I feel pressure on left side of head and im lightheaded. My left side get tingly and numb on and off. I occassionaly get flushed with little tremors. Was on a 2 week heart monitor with negative results. Also negative. EEG, brain MRI, EKG, Stress test, carotid. 24 urine cortisol check. What can it possibly be? I am drained. Help.