Hi! Congrats on your new puppy

!!!
It's always a good idea to get things checked out with these little ones. Since you were just there, you could probably just call and ask them if you should bring him or not. He may just be adjusting to the environment in your home, different smells and such. Is he from your area? I know when I travelled to New Mexico from Florida, the dry air played havoc on my sinuses and skin, it was awful! Maybe a humidifier in the room where he stays would help?
Keep us posted, please? This is such a wonderful place, you'll find so much valuable insight and advice here