The gestation period varies from 55 to 65 days total, milk can start after the first few weeks, then the nipples get full and can drip from being Full just a few days before delivery!!!
How Long After The Female Pitbull Milk Come Til The Puppies Come?
Right away
It could be a week or several days. When they stop eating and lay around or start scratching around then it about that time. Stay close to her she will need your support.