I had all 4 wisdom teeth extracted 4 days ago by an oral surgeon. They said they had no problems removing them. I swelled up a lot on both cheeks, but mainly on the right side. I then went to the dentist yesterday as my right cheek was warm to the touch. He gave me pencillin for an infection. The swelling has gone down and the redness gone away, but now I feel a small walnut sized lump in my cheek. It is right above my mandible near where the tooth was removed. What could it be? I heard that it may be a bony callus formed to protect the area surrounding the tooth and that it will disappear within a few weeks. Do I need to go to the dentist again to get it checked on? It doesn't hurt too bad. Thanks for all your help.