Could I be pregnant?

So about 5 days ago right before my period was supposed to start I had unprotected sex and ya know how tht went 🥶 I took a plan b maybe an hour after tht so I thought I was good but maybe less than two days after I did it again and my period is late by 4 days. I don’t know if it’s because the pill or something else. Should I get a test or just wait??