I am 3 days late should I be worried?

Hey peeps, ı had to get my period yesterday or 2 days ago (the usual for me) ı have irregular periods a lot. But ı still haven't get it. I feel like its about to come but no sign of it yet. I had sex with my boyfriend day after my ovulation, ıt kinda stresses me out but nothing more after that or before this month, so pregnancy is not possible ı guess, plus ıts my finals week and last week ı was super depressed and drank too much alcohol, no proper food and I ve been super stressed since the ending of my ovulation untıl now, which is exactly two weeks. And now I'm 2-3 days late. Do u think ı should worry about pregnancy?
I am 3 days late should I be worried?
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