I found a site that turns having a baby into an even bigger gamble than it already is, at less of a cost: http://www.expectnet.com/games/ChickpeaChawan
For free, you, too, can join in the fun of guessing when we'll trade in couplehood for family fun. I'm the site manager, so if you decide to bet on me going OVER 40 weeks and find your post deleted... well, you can guess who might have made that happen. :)