I have a largish bump (maybe 1/2 inch round) that I thought was a blister on the roof of my mouth behind the front teeth. It is very painful and my whole mouth, teeth and gums are very sore, right down to the back of my tongue and throat. I actually have headaches and pain/pressure behind the eyes as well. It isn t really responding to Tylenol and It is hard to eat anything. I am existing on Italian ice right now, which doesn t really help the pain. What could it be, how long should I wait, and should I see a dentist or a GP? Thanks -- Anne Marie