Usually by day 2 or 3 my girls get excited at the rest of my gang going out so they tag along if they want to. I play it by ear and let them tell me

If you are worried about germs or whatnot then don't walk her in high dog population areas and wipe her milkbar and legs down with a weak dettol solution before letting her back in with the pups.

Personally, I feel keeping bitches in for 8 weeks is a little cruel. My girls wouldn't cope at all...but then they do get walked 2 or 3 times a day usually right up until the first pup is out.