My pit-bull mated with my other pit-bull around the end of February. I don't know exactly when the due date is, but she's starting to get big and her breast are hanging and getting fat, but no milk is producing yet. When will she start to produce milk?

Care of the Pregnant Dog (http://www.marvistavet.com/html/care_of_the_pregnant_dog.html)

Here is a site that will answer any question you may have.
What are your plans for the puppies?
No lectures, but have you considered having your pets spayed or neutered?

It is going to be very important for her to have proper vet care during this time.
Proper diet is also very important.
And I would start now saving up extra money if she encounter problems with delivery.

Thanks for the site, and no I don't want my dog to be spayed or neutered because I'm able to take care of her and the puppies. We already have a spacious area for her and the pups. And she eats properly and goes outside for walks. She's taking care of. I understand where your getting at though, thanks for your concern.