For about a year now, I have been having sharp pains behind my left ear. They tend to come about when either I lean over or do any movement really fast. You can feel the pressure pains behind my ear. The pain isn't constant at all, it only lasts when I bend over or any sudden movement. Its just on that one side. They come and go at different times. I have gone months without having one, but lately it has happened a lot. I hardly ever get headaches other than this pain. I am getting an app. To the doctor next week. What could it be?