Suzanne

Okay for you I will assume the risk of not being Charm but "Mister Seltzer water " (I'd prefer to just be associated with Seltzer like David with VHC and HPV )
Seriously although this is my first one, already my tongue burns and the Salt water rinse they gave me in the hospital made it worse. Something about the fizz in the Seltzer resonates with me and I picture it like in the TV commercials with little "scrubbing bubbles" scouring my tongue clean with no damage to tissue or stitches.
The key is to buy only single use cans no larger than 12 fl oz. Be sure not to get "tonic" water which is similarly packaged or the sugar flavored versions, - just plain old Seltzer. Pop one open, pour into glass and swish and spit. I have to use a syringe this time around. It can't hurt to try.
If that doesn't help then you have to go with the old punk song standard that came out just about when you were born: "Sex and Drugs and Rock n Roll" plus suppositories (better than any laxative)
Best wishes and fervent prayers heading your way