I had a smiley face for the first time on day 12 of my cycle. I had sex with my boyfriend, who did not pull out. The next day I also had a smiley face, and had a one night stand with a guy who pulled out before he ejaculated, stuck it back in afterwards, but he didn't ejaculate a second time. The next day, I had a smiley face again and had sex with my boyfriend, who did not pull out and went inside of me. Now I am pregnant. Who is more likely to be the father?