Tooth Pain

So, I woke up yesterday with very bad pain in the area where I had root canal last year. Today it is worse and has migrated up into my ear. I'm trying to concentrate on work and am hoping the handful of advil I just took will kick in soon. I made an emergency dental appt for this afternoon. ARGH! I hope my insurance covers it all, I need to save my immediate cash for the house purchase (by December I will be less stressed about the money thing, but this is pretty bad timing).