First I'd like to congratulate you and welcome you to Pet Talk

My big boy Bon slept all night the first night we brought him home and almost all day the next day! It took him about a week to adjust to not being with all his siblings so I'm hoping that your puppy is just missing it's cage mates.

Good luck with the vet visit and let us know how things turn out.
Oh and if you happen to have any pictures I for one would love to see them!

edited to add***
I seen in your other thread that you had looked at puppies who were supposedly mastiff, I have a mastiff named Bon