In the last 3 years I have had 4 episodes of extreme jaw pain. I went to my dentist and he couldn't find anything. He gave me antibiotics,thinking a tooth might be dying. The antibiotics helped and after a few days I was pain free. I had a tooth filled lady week and the day after I was on extreme pain. I went to another dentist because mine was out of town and she said the tooth was extremely infected, to the point it needed a root canal. She gave me antiobics and I felt better. My dentist did a root canal and said that the root was dead. I am on another round of antiobics and my jaw feels tight and my cheek hurts. I also feel like my glands in my neck are swollen. Should this round of antiobics kill the infection or should I go back again?