Do you need a new obstetrician? If this is your first pregnancy, take a look at the lesser-known (but equally as important) questions to ask before selecting your baby's first doctor. What Does Your Schedule Look Like In Nine Months? You want your doctor of choice to deliver your baby. But if the OB is on vacation, at a conference, or will go on her own maternity leave in nine months, you'll need to quickly switch to a substitute.