Hi :) ! A few days after getting two dental screenings from separate dentists (on two separate dates) for a pricing on braces, I got a pain on my inner lip wall. I checked today to see that there is a black discolored dot next to where a canker sore is. I currently have 2 canker sores on each side of my mouth and one on my tongue. No biggie to me initially as I've had a long history with sores, but my worries rely on the black dot. I am a young adult female, 5 ft, with brown complexion. What can this be if it is most likely not cancer?