Hi, I am 53 years old, I swim about 4-5 days a week, on Sunday I noticed while I was in the pool I FELT DIZZY AND LIGHTHEADED. I also have a heartbeat sound in my left ear and when i walk I seem to walk heading sideways instead of straight, i am not nauseated and i have not vomited, i feel like something is crawling in my head which generally happens when it rains and we have been having rain since sunday. i am concerned because the only time i feel relief is when i am in bed and i sleep.