Congrat's on your new addition, she is a cutie. I would take her to the vets for xray to see how many she may have. not knowing can be trouble during her whelp so you know if she has them all. I'm sure there are breeder's on here with better information then I can give. She is a cutie, Me personally I would spay her after she deliver's. Wishing you luck on a good whelp. Keep us posted as we love to hear about and watch the puppies grow. Will be keeping you in my prayer's.
Anne/Luci