Help please - possible pregnancy

Hey guys,

I need advise, last Sunday I took one of my pills (I’m not on them regularly as I have polycystics) so I don’t get my period (I had an event during the week). I thought taking it will delay it. I had unprotected sex but I’m pretty sure he didn’t finish and we just stopped half way (both drunk and tired) however the other day I’ve had sex again and he literally just pulled out.

Now my period is late by 3 days. I know taking the pill last week would’ve delayed it but I thought I’d get it by now as it’s been a week.

Any suggestions on what it could be?

Thank you