I read somewhere that it can take up to an hour to pass the placenta. Seems like that is a long time and I have no clue since we are awaiting our first babies as we speak. Good luck! Can't wait to see pics!
The placenta is usually out before a half hour after birthing, but I had a doe this year that retained her placenta for 24 hours so we gave her lute to get it out and it was out within twenty minutes.