Hi, I have something that i can only describe as a mouth ulcer at the back where my tooth number 7 used to be, it looked a bit raised and like it had a little cut in the middle, it started to heal though but now it has a cut again, though it's not raised anymore. However, after this started the jaw joint at that side started to feel a bit sore, well not quite sore from the start, it was more that i was aware of opening and closing my mouth at that side, i can't explain, like i didn't feel like opening my mouth. And now whenever i move my jaws, it aches right up where they meet, at the joint. I am trying not to worry myself and i would really like to have an explanation like holding tension because i really freaked out when i first saw the ulcer thing...But i still worry. I keep fearing it could be something really bad and i am scared. It's particularly scaring me cause it's one sided, wouldn't it be both sided if i was holding tension? Anyone felt this? Thank you.