Welcome to the board. I'm sorry that your dog wasn't spayed after her last litter and now you are dealing with the realities of back yard breeding. Have you contacted any rescues in your area? Pit Bull Rescue Central has a listing of rescue organizations by state here: http://www.pbrc.net/organizations.html
Do you plan on spaying your female now? It would be the best for you, for your female and for the breed as a whole. I really hope you will consider it. You can try posting that the pups are up for adoption in the Rescue section after you have been granted access to the rest of the site, but you cannot sell them here. Good luck to you, and PLEASE spay and neuter your dogs. I really hope you are able to find good homes for all of your pups.