Things will get better for you. Your fur baby is just scared right now and trying to figure out his position in your home. Spend extra time with him right now. Try thinking like your puppy. How would you feel is you had left the only home you had known to be taken to a home full of strangers. Wouldn't you feel nervous and out of place? Trying to think like your puppy is the best advice I can give you.
Good luck.
Pepper