question: I have a painful lump right under my jawline. It is not where I have had a swollen node in the past, it is slightly above it and forward slightly. I do clench my jaw and grind my teeth at night occasionally, and yesterday I thought this must be what the cause of the soreness of my jaw was. I woke up this morning and felt the lump, about the size of a quarter. I do not feel sick or cold symptoms at all.