To birth control or to not?

Zashary • 18 really friendly, like meeting new people (:
I have a question for all of you, I'm on the pill but I missed a few days where I forgot to take it & I finally took it again this morning right where I left off. A few hours later I had sex with my boyfriend & we didn't use protection, is there still a large chance that I could get pregnant or not so much???