DEAR MAYO CLINIC: I am in my mid-30s and a mom of twins, and it seems that I recently developed what must be an overactive bladder. It hinders my daily activities and makes me feel embarrassed, as I often must excuse myself abruptly. I wake up multiple times at night, too. Sometimes I also seem to leak urine. Are these conditions common for women my age, and what can I do to make them more manageable?