I keep hearing a swoshing--thumping sound in my head, mostly around my left ear and side of my head. Also on the right side but not as much. I was going to talk to my Primary care doctor recently and I mentioned it to his assistant. She said she had the problem and it was her thyroid. She looked at my record and said my thyroid was alright. I forgot to bring it up to the doctor and she must not have written it down because he didn t bring it up. It s been going on about three months. What else besides my thyroid could cause this noise?