So the vet visit went pretty well. He didn't have any fluid in his belly so it looks like the intestinal integrity is maintained. In fact, the vet doesn't think the problem is nausea at all.
I'm going to start a new thread with the problem we now have so that people with the right experience will see it but the basic problem is that his tongue his irritated. He had a pretty bad allergic reaction to the surgical scrub so he's got some blistering and dry skin around the area where he was shaved. They think that licking that area caused his tongue to become inflamed and that's why he won't eat. One thing after another... Ugh!