Isn't it kind of amazing sometimes? I look at DS and I'm like, "wow, that tiny person grew inside of me from nothing and now he's a little boy." DH gets that way too. He not infrequently says, "you made that!"
we were just talking about how crazy it is--now the new baby is the size of honeydew melon (I'm due in 4 1/2 weeks) but at one point she was the size of a poppy seed. Crazy!