Well... I grind my teeth alot and pop my jaw because i have a weird jaw and I can move my mouth a certain way that it pops... I have been getting these weird pains in my head every now n then for awhile.. they come and last for like 10 seconds then go away... I'm pretty sure its my jaw because they usually come after i grind my teeth which I cant seem to stop doing =(... but could these be possible signs of brain tumor? I have had CT scans like 1 year ago..