like a thin pencil lead, in the middle of my
lower lip. But I also noticed that I have a very sharp edge
on one of my lower teeth, which may have caused that "line." I also noticed a small little bump, the size of the head of a pin, on the inside of my upper lip -- but it is not visible. I just noticed that using my thumb and forefinger. I'm scheduled to go to the dentist in a month or so, but am scared about the "bumps" and wonder if I should rush in sooner.