My NZW rabbits take about 30-32 days from mating to birth.
bunnies usually get be pregnant early 4 months... if you keep males and female bunnies together the males will have sex.
bunnies can become pregnant after 24 hrs of giving birth. around 21 days to have the kits(babies). I hope your bunny is okay.
you can check with your vet to check her out.
Can she "hide" babies anywhere? They're not always in a nest with new does.
I'm sure if she kindles you'll do great on the fly and if she doesn't, well you get a break (her too) as long as you need til next round!
