I am a 16 year old male, 5'9'' and 150lbs and for a week now i have woken up every morning by a fast heart rate, naseau, and diarreah. on two occasions it has made me vomit. i do not drink or do drugs, i do not drink alot of caffiene, and i have only had one surgery: my tonsils were removed a long time ago. please tell me what this is and how to cure it?