You're pregnant and excited for this nine-month period that belongs just to you and your new little one. You're happy—until all these bizarre occurrences start to make you worried. Why are your feet suddenly expanding? Why does your favorite food suddenly make you nauseous? And why are you constantly ... leaking? If you're wondering why all these "symptoms" keep popping up, what's normal, and when to talk to your doc, we've got your guide.