Everyone talks about pregnancy in neat, three-part segments. First trimester: exhaustion and nausea. Second: energy and baby kicks. Third: swollen feet, anticipation, and the countdown to birth. But when the baby finally arrives, the chart ends, the attention shifts, and the world assumes the story is complete. What follows, however, is a powerful chapter of its own. It is the one few prepare for and even fewer discuss: the fourth trimester. The fourth trimester refers to the first three...