plan b!! help!

earlier today i had sex with my bf, i got my period november 15th, it’s usually always on time or it can be a day early or a day late. Besides that.. earlier today my bf and i were having sex, and the condom had gotten stuck in me, and he had came so he pulled it out, and i was freaking out so we go to the store and got a plan b i took it within 30 min of that incident happening, keep in mind i am off my fertile window and we had sex after my fertile window, do you think i’m fine?? pls help !!