missed a pill!

Hey guys!
So I slept over at my boyfriends house last night and forgot to bring my pill. I'm always good about taking my birth control between 9:30-11:00 always! 
We had sex last night around 9, and he did not cum in me. 
I will take 2 pills tonight around 10 to get back on schedule. 
Do you think there is a way I could be pregnant? I've been on birth control for over a year now.