Hi Kathy,
I'm new to this journey like yourself my Husband is currently going thru chemoradiation for squamous esophageal cancer he was having difficulty swallowing when diagnosed had lost 40 lbs. he has one more chemo to go and 14 radiation treatments. his oncologist said in 50% of patients as the tumor shrinks, they are able to eat I thought for sure he would need a feeding tube he still has to avoid certain foods his doctor also prescribed a steroid to stimulate his appetite he's eating all the time his favorite is Carnation instant breakfast he had 3 yesterday gained 5 lbs. last week. Not the case for all patients but I'm so thankful.

Are you in a position to go to the ER at Mayo? If so, that is what I would pursue.
Best Wishes