At my first day in Mommy & Me, I made a new friend. We seemed so much alike; both of us were bubbly blondes and first-time mothers to three-month-old babies. We even shared the same alma mater. “What year did you graduate?” she asked, as excited as I was to find common ground. “1992,” I told her. “How about you?” She paused, seeming surprised. “Um, 2002.” That put her age at about 30. Wow, I thought. What a young mom. As I got to know the other women in the group, I discovered that they were all in their early thirties. At 40, I was the outlier. The weird one.