I finally decided to have sex for the first time with my boyfriend. He had a condom on when he stuck it in. It was fine and it stayed on the whole time inside. He did not cum because he got soft and pulled it out. So to try and get it up again we started grinding. Me without any panties on and him with the condom still on. He did not get it back up but at a point he said, "Oh it slipped a little!" That scares me because I am aware that even pre-cum can get you pregnant. Since I didn't have any panties on while grinding and there is a slight chance that the condom slipped while grinding, how high is risk of pregnancy? I do not take birth control yet but I am curious if I should go out and buy planB tomorrow.