As you know, your baby was far too young to have been taken away from his mommy and litter mates. It's a shame your breeder let him go at (what your vet thinks is) 5 weeks. A lot of development happens between 6 - 12 weeks, and it is vital that the puppies stay with their mommies during that time. This is probably why your baby is crying.
Did you contact the breeder? What did she say? There are alot of wonderful knowledgeable people on this forum that will be able to help you...so you came to the right place!
I am very sorry you were mislead by the breeder
