Jodi Picoult said this quote

When you're pregnant, you can think of nothing but having your own body to yourself again, yet after having given birth you realize that the biggest part of you is now somehow external, subject to all sorts of dangers and disappearance, so you spend the rest of your life trying to figure out how to keep it close enough for comfort. That's the strange thing about being a mother: until you have a baby, you don't even realize how much you were missing one.