How about your wisdom teeth, have they been removed? At your age you shouldn't have that kind of pain and discomfort. Have you had any head/neck injuries? My Lyme disease started with neck and back pain & discomfort at age 20, I thought it was just an alighnment problem so I went to several chiropractors for adjustment, but I just got worse, I was also diagnosed with TMJ, right after having my wisdom teeth pulled out, around age 19. I think there is a link with my wisdom teeth being pulled out. At any rate Standard Process supplements have been key to getting me healthy.
Again you are too young to have these sort of problems and you should do all you can to find the source of the problem and correct it before it leads to bigger issues.