I'd call the vet first thing tomorrow morning and ask them to see her. It would only take a few minutes to check her out, and in a puppy that young, they should be willing to squeeze her in. If not, go to
http://www.ytca.org/breeder3.html, find a breeder close to you, and ask them which vet they use. You're more likely to find a vet experienced in Yorkies and toy dog breeds that way.
I hope that your baby will be fine
!