oh god, I know exactly where you're coming from! I also share some of your symptoms
sore throat
constant throat clearing
mucus in spit (constantly)
burping
headache (also from time to time)
feeling tired and wore out
and anxiousness anytime I'm about to eat!
also my biggest problem is food sticking on the right side of my throat, so I'm not eating well either and I've lost lots of pounRAB already..
I'm having gastroscopy tomorrow and I hope they can strech my throat there, so It'll hopefully be a bit easier for me to eat.
I'm on Esomeprazole 20mg, but not eating it for 6 days now, cause my doc said until gastro I should stop a little for docs to do tests for h. pylori as well.