She is perky as all get out and ate this afternoon, the little stinker. I called the vet and moved her appointment up to tomorrow instead of Monday. I think she's fine. Thanks for the replies. No one knows like a Yorkie owner how concerned we are. Could one of the breeders work on breeding a bunch of Yorkies that can talk? If that's too hard, how about sign language?? ("Mommy, I just need to poop. I'm going to be fine. Relax!!")