I’m 16...please help ladies :(

I had unprotected sex 5 days ago, however I took a plan B .. I took another the next day just to be extra sure because I’ve heard that plan B has failed woman even though it’s 96% effective... So my period is supposed to be due in 6 days... so my 2 questions are : 1) If it doesn’t come , does that mean I am pregnant?

2) if it does come, does that mean I’m 100% not pregnant? Or would my body effect my second period if I am pregnant?!

PLEASE HELP , I’m so scared , IM lonely , I need someone to talk to me, please please help ladies , you all know the struggle of being a woman... it’s so difficult ...