Can a 13 year old girl have a baby?

Yes. It sure messes up her life, but physically many 13-year-olds are capable of having a child. It will have a huge negative affect on her body. any girl that gets her period, can have a baby, it doesnt depend on your age, but if you get your period, you are able to conceive. A thirteen year old can have a baby. A female may see her menses as early as nine years old. Twelve is about the average though this depends on the genotype of the person and the culture. Yes if she has reached puberty. If the 13 year old girl has a menstrual cycle, had sexual intercourse and the male ejaculated inside her fertilizing her egg, then yes she can become pregnant. == ==