Once the infected tooth is out the pain will be less than you are dealing with right now so it will seem like a relief but I would be more concerned with your infection and the fact that its not being cleared up by your antibiotic. My guess is they will start you on an IV drip antibiotic before you go into surgery to help with the infection. It will probably be rocephin and that wont bother you.
The worse part about the whole experience will be inserting the IV and it just feels like a bee sting. Not to long after that you wont care what they do to you
