I had some tooth pain, upper back two or three. endodontist did X-rays and said they are negative for need of root canal. reg. dentist gave me antibiotics which I took for 7 days and pain subsided for two weeks but now I am having a vague odd feeling, kind of throbbing minor pain in the same teeth when I bend over or cough or jump. I have a slight tickle feeling in my chest, like I need to cough. a slight amount of nasal congestion also. my teeth are not sensitive to hot or cold and I can chew on them. but why do they feel odd?