Please help! Period late by 8 days

Okay so, on the 22nd of February I was suppose to get AF. I didnt realize that was the start date and I had intercourse, my boyfriend had a condom on and there was no cum or precum anywere near me when we did it, when he came I pulled out. Since then I am 8 days late, I have been stressed out this last month with balancing college and highschool. I have had period signs like mood swings, sore breasts, and cramps, but all these signs are not affecting me majorly its only been slightly. On the 24th of Feburary (2 days after AF was due) I had gone pee and when i whiped there was the lightly pink color on the toilet paper, I stuck my finger in to see if the color was inside and it was but it was still a very very light color. Is the stress causing my period to be late or could it be something else? I have also had my period be late by 12 days before and have an inconsistent cycle sometimes, but the last few months it has been regular.

Any advice would be appreciated please! 💕