9 days late!

alrighty so. period was supposed to come around 9 days ago, but it's never on time. always late. i have starting working out more too. soo 9 days ago i had unprotected sex, he didn't cum and he peed before. we didn't go for that long. i have had pretty bad acne which is normal before i get my period. i also got a sore throat, which is normal i always get either sick or horrible acne before my period. i just need reassurance that i'm okay i guess. honestly i think i'm fine. but last night i hooked up with a guy and ended up taking the plan b pill, so is that gonna screw with my period even more?