If you want a natural way to try and try to induce labor that won't cause as much pain as the oxytocin injections then you can give her cool raspberry tea, (no caffiene or sugar, the all natural stuff) Also give her tums with Calcium and let her out of her cage a little bit to get her muscles working by exercising them.Don't let her over exercise but let her hop around the room for 10 mins or so. If you get to the 34th day and she still hasn't had labor then take her to the vet and get the injection. Also my rabbits are picky.Some of them will only have babies if they have a nest with an insane amout of hay in it, make sure the nest box is crammed full. I wish you the best.