Thanks for well wishes, Margaret.  I do have pain meds but am probably not using them as much as I should.  I'm going to ask for Magic Mouthwash today to see if it helps, too.  
I've pretty much stopped eating over the weekend; now it's mostly Boost and Greek yogurt and protein shakes.  Everything stings, even water, sometimes.
I'm giving up on the hair; it's definitely going fast.