Big mistake?!

My period finished almost 2 weeks ago and I started my new pack last Sunday (22nd) - 10 days ago and I missed the last two days so when I went to take again today I realized what I started was the last week (placebo pills) and I’ve been having unprotected sex with my boyfriend like we always do since that last period thinking I was taking my correct pills. I’ve never done this before and I’m not sure if it’s too late to take the emergency pill? Could I have conceived already? I’m not trying to get pregnant right now at all! Just want to know my safest options😩