Keep in mind that if you sell it, you can't use music that is copyrighted. Actually, you can, but you have to ask for permission from whoever owns the rights to the song and they don't always give it.
Also, is your birth story online somewhere? People refer to it a lot, but I searched once and couldn't find it.
Oh, and I totally think it would sell. Maybe not to childbirth educators, but to all of us birth junkies
