I am sorry you are having to have a problem so soon after receiving your fur baby. Rest assured you are not alone and this problem can be fixed.
I am sure your vet will help you take care of this problem.
Enjoy your baby and congratulations on her adoption. What did you name her? If you'd like we ooohhhh and awwww over pictures of everyone's Yorkie, so please feel free to post some if you'd like.
Keep us posted on your furbabies progress.