A couple weeks ago I went to my high school prom. I am currently 17 and my boyfriend is 19 well prom night got to us and we ended the night having sex. During intercourse our condom broke without either of us realizing and he cumed in me. The next morning we went and bought plan b and I took it around 12:30, mind you we had sex the day before at midnight. How likely am I to get pregnant even after taking plan b? I have not yet bought a test to take and my boyfriend has told me if I am he wants to get married. Has anyone else had this happen or taken plan b?