The wait is finally over: after 40 weeks of medical appointments, nursery planning, and anticipation, your baby has finally arrived. She is perfect in your eyes, healthy and adorable. Yet over the next few weeks, your initial joy is replaced by all-consuming worries: Is she feeding enough? Why is she crying so often? Is something medically wrong with her? These worries are constant during the day and keep you up at night. You feel tense and irritable, your heart races, and you feel…