I can't open my mouth wide feels like my Jaw is ripping apart (Right Side) behind my Third Molar Tooth :( . . . I slept at my my moms friend s house, on the couch to be specific. . with my head on the couch arms not straight positioned and when I went home and slept the next day I felt behind my right Third Molar tooth it hurts and when I try to open my mouth wide feels like someone is ripping my Jaws apart? ? ?:( It s a bit swollen it looks like a strand behind my Third Molar tooth. . I know sleeping on Couch Arms is not a good idea for the neck but I slumbered away while watching the computer. . .I have no symptoms . . .but I really need a good advise if any? THANK YOU!