About two weeks ago, I had a really bad sinus infection. I went on one flight, and upon descent, I experienced the WORST ear pain - I thought I had ruptured my eardrum. I got that stuffy feeling in one ear, where you can't hear, and have intense pressure and pain. I didn't worry, because by the time we landed, it was fine again. Felt itchy and strange, but no pain. About a week ago, I started getting jaw pain and pain surrounding my ear. Very DULL pain. My jaw doesn't pop, doesn't crack, or any of the typical TMJ things. My ear seems to ache from deep inside. Again, very dull. What could this be?