help???

emma

so me and my boyfriend tried to have sex on july 4th and he didn't cum or anything and used a condom. we stopped after 20 minutes because it hurt too much. but my period is 3 days late, and i'm freaking out lol. i know i'm not pregnant. but i would like to figure out or maybe reasons why my period is late. also when i wiped this stuff came out. it's kinda darkish red. brownish. advice?