I just had a suspicious lump on my gum looked at. I was absolutely freaked out until I had someone look at it.Like you I was thinking what are the symptoms of jaw cancer? I saw a regular doctor, and had a dentist look at it. Both thought that it did not look suspicious, but couldn't tell me exactly what it was. I see my oncology ENT on Dec. 10, she will probably say the same thing. So--take a deep breath and relax(easier said than done) there are many benign things that it could be.Be well. Teresa