I'm a three and a half year survivor of stage 2 tongue cancer. The left side of my tongue was removed and replaced with a piece of my arm. I speak as well as I ever did.
My tumor was located on the bottom of my tongue but gradually grew up and around the side and it didn't hurt nearly as much as my ear did (referred pain).
If you've already seen your regular doctors and came away with nothing conclusive, I strongly urge you to see an ENT.
Please keep us all posted--the folks on this site are really helpful.
Hoping for the best for all of you.
Julia (and Flappy the tongueflap)