That is helpful of Fluffagrams for you so that answers the question
. I assume the first litter would then need some kind of hand rearing? Hopefully someone who knows will answer that one!
You're doing a grand job with them - remember not to go too close to the cage or disturb the Mum or the nest until the pups are coming out on their own and their eyes open. Hopefully there won't be a second litter.