Hi im 18 years old, 5'7 150 pounds. Ive been playing hockey for 15 years and i recently recovered from infections colitus (which was an infection in my intestines and colon and stomach). After the infection was gone, everytime ive played hockey ive encountered dizzyness and nausea and a rapid heartbeat which ive never felt before. Ive had 3 EKGs, numerous blood tests, a echocardiogram, and a vitamin deficency test. Everything has been completely normal. The symptoms only happen when i play hockey. Does this sound like anxiety? Im a very relaxed person which is why i dont think it is anxiety but since the doctors have ruled everything else out, im not too sure what it can be. If anybody can help ne out that would be fantastic. Thanks!