Yesterday I yawned and my jaw felt like it had completely popped somehow. Not the joint, the actual bone. Ever since, there is a piece of my left jaw back towards my molars, possibly under them, that is movable (I can move something through my cheek around a bit) and in a great deal of pain. Would this be a sign of a wisdom tooth coming in? I am seventeen, but my dentist didn't really think that I would even get wisdom teeth. If this is a sign of a wisdom tooth coming in, could there possibly be something wrong? Any expedient response would be lovely, thank you!