Why haven't I started my period?

Hiyah..x
I Have Had Discharge Since I Was 11 An I Am Now 13
I Have Breasts
An I Have Hair Down Below
And Have All The Signs Of Startin My Period
But I Haven't

Could Someone Give Me A Reason Why
ThankYou xx

it will come but just b paitient my because was like that and now she is just fine its just your body its weird I neva had the problem but my because was scared but its nothing to be afraid of its just nature geee be happy im 15 and spend 2 days every month in my bed curled up in pain

Indeed it will come, don't be so anxious it's not that fun to deal with. I understand feeling left out or left behind, but once it starts there's not much stopping it from then on, and you will have to deal with it every month for many years.