I went to the dentist a few days ago to fix a minor cavity, and I've already had a deep cavity filled in my upper right in the back. While they were filling the minor cavity, they put the suction thing on the right side of my mouth and it hurt the whole time. I told them afterward and they said it's because it's cold air. Ever since, the deep cavity started to throb and hurt like crazy. Before I had no problem with it and now it hurts to touch it and bite down on it and I don't know what to do.