with that said on the post above, no need for me to repeat, here you go, you need to learn breeding 101 ASAP..
Dog Breeding and Canine Reproduction by Debbie Jensen. Dog Breeding and Whelping guide for dog breeders.
get her a good puppy kibble and start the transition to it, take her to the vet and have her check just her overall health and make sure you take her for x rays at days 58-59 to measure her pelvic bone and see how many babies she is having.. other than that, you can message me any specific questions you might have.
start thinking about a whelping area and a whelping box..
hugs,