Two hearts beating inside you. Two bodies growing at once. A pregnancy that no longer follows the expected path. The ultrasound screen lights up. The doctor smiles and says something unexpected. "There are two." It's not just news: it's a turning point that will shape your life and that of your babies. Time stands still. Joy bursts forth, and then the questions come. What to Expect When You're Expecting TWINS guides you from conception through the postpartum period. It explains the specifics of each type of twin pregnancy, details the changes your body will undergo, the most appropriate diet for each stage, and how to prevent the most common risks. And, of course, it also guides you through childbirth, breastfeeding, and recovery. Additionally, it includes a calendar of appointments, tests, and checkups based on the type of pregnancy, so you know what to expect at every stage and why. Dr. María de la Calle, a leading expert in multiple pregnancies, draws on decades of clinical experience supporting thousands of families. Her approach combines medical rigor, clarity, and humanity, with a clear goal: to help you understand, anticipate, and make decisions at key moments, because in a twin pregnancy, information changes the course of events. Expecting twins isn't just expecting twice as much. It's experiencing a pregnancy with its own rules -- more demanding and more intense -- that requires attention, reliable information, and well-informed decisions from the very beginning.