Plan B during placebo week?

I take my bc everyday, however I currently haven’t been taking my pills at the same time everyday. So Sunday July 28th my bf and I had sex but I took a plan b Monday July 29th as an extra precaution. I started my placebo pills on Sunday night. & I usually get my period by Wednesday (it’s now Thursday) is my period delayed because of the plan b? Maybe my hormones are all over the place now bc of the plan b and placebo pills? Just overthinking at this point.