Without any disrespect I would certainly like to ask a couple of questions that were not mentioned ..
How old is the puppy --? what shots has the puppy had --? what do the stools look like --? how much time is the puppy spending in the crate during the day --? how much water is the puppy drinking during the day in the crate and is the puppy being let out to use the restroom --? what is the normal activity level in the first 72 hours --?
I think most of the members know what's going on here.. I hope that I'm wrong -- get the puppy checked out by veterinarian as soon as possible .