Scared :(

11 days late, im 16 years old. Had sex september 30th, condom was fine, didnt 'pull out' we just stopped and he went to the bathroom and finished himself off. Im always irregular with my period -should i be wrried im so scared :( please dont scare me. I know he didnt cum insde of me beause frst i woudve known but im still worried cause its the end f te month and my peiod hasnt come :(