S.B.
We liked Waiting for Baby. It's a board book with no words, so you can tell the story however you are comfortable. They cover ultrasounds, decorating for baby, your growing tummy and the hospital visit. http://www.amazon.com/Waiting-Baby-New-Annie-Kubler/dp/08...
And to explain the medical side...what's happening inside your tummy we liked Before you Were Born. http://www.amazon.com/Before-Were-Born-Jennifer-Davis/dp/...