| | Family Health | Baby Health Is it possible for a 10 year old girl to have baby? No, it is not possible for a 10 year old girl to have a baby. A girl must be at least 12 years old to start menstruating, and must be 12 or older to become pregnant. Baby Health - Related Articles Vision Development in Babies Bloody Stools in Babies Baby Vaccine Schedule: What Shots Baby Needs and When How to Care for a Newborn Circumcision What blood type will a baby have with b negative mother and positive father? How should you lay a newborn baby? Can a baby be born at 500g and survive?