Nuvaring was out for 8 hours

I took my nuvaring out two nights ago because it was slipping out and I wanted to rinse it. I completely forgot to put it back in and it was out overnight. I woke up and immediately put it back in. My boyfriend and I had sex last night and he came inside me. Should I take plan B? I really don’t want to screw up my cycle but I kinda feel like I should.