Emergency contraception or late period?

Hi, so i had sex for the first time 2 days ago with my boyfriend, and my period was meant to be coming this week.

My boyfriend used a condom, I saw that he pinched the condom tip and rolled it down. And the condom didn't rip or anything when we were done.

However I still haven't had my period yet now and I'm unsure whether this might just be a late period or whether I should probably use emergency contraception to prevent a pregnancy. Please could you help suggests whether I'm just paranoid or if I should actually do it.

Thank you guys for reading this.