Had sex with my boyfriend unprotected for a year on November 13 I had an encounter with another man unprotected but he pulled out and ejaculated on my thigh I resumed having sex with my bf two days later. I had my menstrual cycle November 26 my due day with clots severe cramps and time length as usual. . Throughout December I had sex with only my bf .On December 27th I missed my period on January 6 I discovered I was pregnant what are the chances it's my bfs.