I am with the majority, especially with what Kim said
let God take care of what He created! If they are meant to be born and survive, then they will ..
Samantha was pregnant when I took her in for her spay and we had NO idea! She was so malnourished when I got her that I waited until she was stronger to have it done. I think the vet didn't realize she was preg until he opened her up. They were aborted. The day I brought her home she was rolling head over tail across the room playing. It didn't effect her any but that was her second litter, her last babies were only 3 months old.....