You find out you're pregnant. You're so excited for the next chapter, but you know life as you know it will never, ever be the same. There's no going back. Then you have the baby. You miss the days when you and your husband can go on dates whenever you like. You miss your sleep. There's no way you'd ever go back, though. This little person is more precious and wonderful than you ever could've imagined.
You are so sad when they grow out of being a baby. Each milestone brings you a little farther away from that precious baby you brought home. Oh, but each milestone is also so exciting and it's so much fun to be a part of it. It's sad to know you'll never have that sweet baby again. But, you wouldn't trade the sweet little ball of energy dancing before you saying, "Mama, dance with me!"
There's that little pang of longing for what she once was, followed immediately by the joy of what she has always been.