question: I have a small hard lump in my mouth at the jawline on bottom left side.  I have a crown on the tooth that the small hard lump is under.  About 2 months ago I had a filling done on the tooth in front of the crown.  I will tell you she gave ma alot of shots to stop the pain (about 5)  She said at the time \"I have given you enough for an elephant\".  Well now I am nervious because, it has a lump under that area.  It is a bit sore, not horrible but noticeable.  What do you think it is