I have had this heart beating sound in my right ear for about 7 months now. i have to sleep on my right ear flat down on a pillow just to sleep, or watch t.v. It drives me crazy. Iv had a MRI, MRA, and a Cerebral Angiogram, but the doctors have yet to find anything out. My doctors want to do more tests but I think iv had enough. Im trying now to find ways to deal with it.