I have had a whooshing/buzzing heartbeat in my right ear for about 2 weeks. I woke up suddenly with it one morning and I freaked out! I went to the doctor for a check up but she couldn't see anything due to my ear canal being almost completely plugged with wax. I have used earwax dissolving drops to get rid of it. I don't hear it most of the time, only when I move my head to certain positions. I have noticed it is louder when my night time jaw-clenching and tooth grinding has been bad. Could it be something serious or something related to muscular tension from TMJ?