Need a second opinion

So yesterday I went out with my boyfriend of 4 years (We're both 17 now) and we took each other's virginity. Neither of us really knew anything of what we were doing. He pulled out and came on my stomach. I've been taking BC for about 2 months to help with period pain but I missed one by an hour 3 days ago. I'm supposed to start my period in 2 days according to eve. I was just wondering if there is any chance I may get pregnant? We both are going to go to UC L.A. next year for medical and want to graduate before we start a family. Thank you