I have a tooth that is really painful, throbbing and I have a yuckky taste in my mouth that is making my stomach hurt. Four years ago this same tooth flared up on me and my dentist said it was from a root canal that went bad. That work was done in Portland, OR about 10 years before that. My dentist wanted me to be seen by a very expensive specialist, but without any insurances there was no way I could have it done. My dentist got me on some antibotics and a week later he drilled into the crown and was able to complete the root canal. And, it has been fine until a couple of days ago. I'm thinking that if I go to the urgent care clinc I could at least start get going on some antibotics and get this poisen and pain under control. before my dentist appt Monday afternoon. Anyone have any ideas?? Good or bad?? I am afraid of this infection getting really bad.