that's getting a little scary,him not eating yet jen..will he lick food?You must be frantic.did the vet give him antibiotics after the surgery.sometimes they do that.but not always needed.
geez...maybe the vet needs to look in his mouth again,see if there's something else.
do you think he may be giving up?something from his past.missing his original owner.
I'm so sorry for him and you worrying so much for him