Period is 3 days late

I had unprotected sex the day after I was supposed to be done ovulating (he pulled out), and then the day before my period was supposed to start (he didn’t finish). I’m 3 days late and lowkey freaking out because it’s not usually late. My last period was a full week late and idk why so maybe that has something to do with it? It’s been a little irregular which is odd since it usually isn’t. Chances I’m pregnant?