On Friday 04/28/2017 my boyfriend and I engaged in sexual inter course in which he ejaculated inside of me. I've been on birth control since November, but I missed a pill the previous Saturday (04/22/2017) which I made up for by taking on that following Sunday taking Sunday's pill late and Saturday's together...haven't missed a pill since. On top of it all I took a Plan B pill Saturday morning after the incident occurred. Should I be worried at all? I know I could just be paranoid, but it's the first time I encounter something like this and I am really worried...please help.