Hi, over the past week I have experienced severe pain in the back, left of my mouth. After a couple of days, I was able to see a small "bubble" like structure forming on my gum in the very back. I never have teeth problems, and I have had no tooth pain, the pain was only with my gum in that region where the "bubble" formed. After looking up my symptoms online, I found "gum boil" and "gingival abscess". Are root canals necessary for this? It has already drained. It's still somewhat tender to the touch, but otherwise no pain. I have an appointment tomorrow just to be certain, but do you think that just a good antibiotic therapy treatment would kill off the infection? Thank you.