Blue Tongue Skink ? cause of illness

[Zoo Nanny]

What's happened so far.
Monday night saw a small amount of mucus in one corner of mouth, less than 1/4 inch. He had eaten, pooped and moving around fine. I watched him for quite a while thinking his breathing may have been a little faster than the norm. He is currently shedding
Tuesday morning still shedding, looks good, breathing normal no mucus ate breakfast no issues
Tuesday night again small amount of mucus in one corner of his mouth. His breathing increased after handling and he appeared distressed. Calmed after about 20 minutes.
Wednesday morning breathing appears fast again, no mucus noted.
Got an appointment for 2:50 so I took him to work with me maintained his temps in tub. Still appears to be breathing heavier.
Xrays and blood work. He stayed at the vets while I returned to work. Back to the vets at 7. Xrays normal, blood work being sent to University of Miami.
His throat is almost entirely occluded causing the breathing issue. No masses seen on xray. Vet is consulting with other herp vets. He was started on antibiotics IM for 5 days. Vet showed me how to do the injections so he could go home. Concern is possible organ failure or hopefully an abcess beginning unding the chin which is not visable yet. Vets did try to aspirate under chin but it was negative for fluids. Abdomen is also bloated at this time. Because of his advanced unknown age it's uncommon to see them in vets office. He feels that he is a New Guinea Skink not a Northern. This confirms the first vet in 2002 statement of wild caught because he was loaded with parasites and mites. Unusual so they said to see in captive bred individuals.
Does anyone have any ideas of what may be happening or things that the vet could look at or the name of another herp vet that treats blue tongues?
This is happening all so fast I'm at a loss on what to do. I've bumped up his temps a little which the vet approved.