Pregnancy scare!:(

My boyfriend and I had sex last Tuesday, so it’s been about a week since. We used condoms when he came (he came twice), but we did it a 3rd time without one after he came so I was afraid he might’ve had some cum on him left after he took off the condom, so like 30 minutes after we finished we went to go and buy the plan B Take Action pill. I took it right away, within the same hour after we were done having sex. IM SO SCARED. I’m only 17, my parents would DISOWN ME if I got pregnant 😭 I was supposed to get my period FOUR days ago and I haven’t gotten it yet. I’m so worried. I’m praying I get it soon and that it’s only delayed because of the Plan B pill. Someone help!