Welcome to YT.
To determine if your pup is the correct weight, pay less attention to the number and assess his body. On a physically well-formed dog, you should be able to feel the ribs readily, but they should not be protruding.
My younger boy was quite boney as a pup.
A checkup with the vet is a good way to find out if your pup is the correct weight for his body.
For posting pics:
http://www.yorkietalk.com/forums/my-...-pictures.html