Should i take a plan b?

Hey guys! So today me and my boyfriend had sex, which I am on currently on birth control. I took my last placebo pill last night and tonight I was supposed to start a new pack but guess I either lost it or used my last one without realizing. Since pharmacies are closed, I have no way to get my pills until Monday morning. Also, be did pee before sex and pulled out way before he came. Yes I do know precum has a chance of you getting pregnant as well :) thoughts and opinions pls!