Neurontin might be a way to determine if you pain is from the nerves or not. I know we are very sensitive to meds at times, but if you're able to take it and not have to drive, in case you get dizzy or groggy, you might want to try it. Do you have any clicking or popping in the joint? Did anyone mention TMJ? They're positive you have no infection? I would go back to the doctor who said to come back, to see if he sees anything new. I would also express my frustrations with being told different things by different docs, and see what he says.

I hope you feel better soon.