I can't agree more with these people, your baby needs a vet ASAP. I am NOT trying to lecture you here, but since you are a new puppy owner, here is what you need to know: If you cannot afford the emergencies a puppy may have, it is best not to get the puppy at all. I know we are past that but this is for future reference. Puppies, especially tiny ones, can get ill, and when they do sometimes it'll go downhill fast.   
Anyway, what I suggest is Care Credit, a reputable and negotiable vet, or giving her to a reputable rescue, preferably someone who specializes in yorkies. I know the emergency vet near us takes Care Credit, although the bill will be higher, perhaps try an emergency vet. If worse comes to worst though, I say it would be best to find someone who can afford what she needs.   
I agree with people saying they've experienced breeders that sold a much younger puppy than they said. This is so that they can sell a smaller sized dog and make more money. A young puppies tummy cannot handle the dog food. If your puppy is younger (I would ask a vet) then maybe try formula.    
Here is another future referrence lesson because I saw a lot of red flags in this post. A YORKIE puppy, or any small breed dog, should not be sold before 10 weeks. Simple as that. They are too small and get stressed easier, they are more prone to hypoglycemia. This person was in it for the cash, clearly. Also, if she said the vet said this, and then the vet told you that they never even saw the dog, that is a BIG red flag. This means she is lying about the health issues of the puppy; she knows something is wrong but would rather just sell it.    
I truly hope your puppy gets better, and just remember the most important thing here is that she gets better, no matter the cost, monetarily or emotionally.     |