I am 17 years old and I have a similar issue. I have other jaw problems as well. My jaw pops and shifts, it doesn't always ache but it does some days. I have a small lump right above the socket, next to my ear on the right side of my jaw. My dentist said it is a plate that should be between my jaw bone and the socket which is what is causing my jaw to pop. But I also noticed a few months ago that I have a lump under/behind my jaw, also on the right side. It moves around. I never thought much of it because it didn't really hurt, whenever my jaw ached I assumed it was because of the displaced plate and I thought the lump might be linked to that issue. But I have a bad cold at the moment and now the entire right side of my jaw is terribly sore, when I feel the lump under my jaw, it now hurts. I don't know if this is a swollen gland? I usually assume the worst and think cancer although I know it can't be true. If anybody knows what this might be it would help. My parents don't take my jaw issues seriously and probably won't take me to the doctor any time soon..