Hi - I have what appears to be a cavity behind my molar, on the gum. I can see, and feel with my tongue that it's a cavity. It's blueish in color, and has gotten slightly larger in the last couple weeks. I first noticed this because of pain there, but the pain lasted just a day or two.
I have no tooth there, and if there is a wisdom tooth under the gum, it has not emerged.
In the last couple days, I noticed a slight swelling on my jaw at this area. As a reluctant smoker, I am very concerned about oral cancer, and know nothing about it, except basic information.