A girl is physically able to get pregnant when she begins menstruating. Thus, girls as young as eleven and twelve are able. However, it is not good for them.
A girl can get pregnant at any age after she has started her menstrual cycle. Once her period has begun, that is when it becomes possible to have a baby.
You can get pregnant the first time you ovulate before your first period. So it varies from female to female. Always practice safe sex to avoid pregnancy.
