I am already feeding my 37 day pregnant yorkie Eukanuba for the Yorkshire Terrier Puppy. She just this past week started to show. I have heard about feeding an egg or cottage cheese? Is this good for them? I have always only fed my yorkies their special dog food. If I can feed this to her how much and how often? I also have heard that too much calcium is not good for them. Any advice as to what I should feed my little girl would be great! I don't take her to the vet until she is on day 45. Also is day 45 ok to do an ultrasound? Is it safe for the unborn puppies?