Why Hasn't My Period Come?
TeenHealth FX completely understands your concern. It is normal to be 13 and not have your period yet. Puberty for girls can start around 10 years old or before and some girls do not get their period until they are 15 or 16.
Your body showing period symptoms or other signs of puberty is normal because your body is preparing for your first period to come. Some girls get their breasts, some hair under their armpits and legs, and changes in their skin 2-3 years before getting their first period.
If you are still worried, then do not be afraid to reach out to a trusted adult or talk to your doctor! Remember, everyone's body is different!
For more information, click here for Kids Health – All About Periods.