If you are newly pregnant or trying to conceive, you have many questions about what to expect. How will your body change? What's happening inside you? Our week-by-week guide will help you through your nine months of pregnancy so you can be a smarter, more confident, more prepared mom-to-be. Each week offers information about your body and the baby's as well as helpful advice you can use throughout your pregnancy. Let's start with a peek inside the womb.