were not done correctly, so they were re-done. A few days ago I started getting pain in the inside gum area (on the tongue side) near the last tooth. Last night, it felt like something popped and now I can feel almost like an indentation. I can just barely see it with a mirror, but the area looks all white. I called the dentist and they can't see me until Friday. Does anyone know what this may be? Should I be majorly concerned? It does hurt quite a bit, but I have had a ton of novacaine shots in that area over the last two weeks. Could this just be irritation? Why is it white??

Thanks!