Okay so me and boyfriend has protected sex on the last day of my period. It was very light so he was fine with it. I was kind of nervous at the time being but it happened. I have literally been readinf everything I could but still feel like I need an answer to my specific question. This is the second time we had sex in the past week and half almost. The first time was right before my period.. which came 2 days later, which was Monday and I usually start the last Saturday of every month. My period usually last 7 days, but this time it last 5, meaning we had sex on Friday. I am not sure if I am pregnant or anything. I just want to know if there is a possibility and what can I do? I know that I am not prepared to be pregnant. Also, I do not understand how my menstrual cycle works so its kind of hard for me to figure out when I will become fertile. Please if you have any answers or advice I would love to hear it. P.s. I am not on any time of birth control.