Dental work while ttc

So as of a few days ago I have had pain where my fillings are in my mouth. I scheduled a dentist appointment but they can not see me till the 12th. My concern is i'm almost positive I will have to have some kind of dental work done and as of the 12th I will be 6 days into my tww. I am worried they will have to put me under or put me on antibiotics. I also don't want to not get this pain taken care of and end up pregnant and have to wait till after pregnancy to have it handled. What should I let my dentist know when I go in?