What is the youngest age for pregnancy?

A female can become pregnant at any point after puberty; female puberty occurs on average around age 13, but can occur as early as 8 or as late as 16. the worlds youngest pregnancy was age 9. the father sexualy assaulted his daughter. Actually the youngest pregnency is a 5 year-old girl. It's sad but true the baby was raised thinking the the mother was his sister but realized that it was his mother at the age of 10.