I had unprotected sex with an ex boyfriend on 25th Oct 2010, I took the morning after pill 26th Oct, I then had a period 11th Nov 2010, I then went on to have unprotected sex with my boyfriend, a week before christmas I found out I was pregnant using a clearblue test which said I was 1-2 weeks, my dating scan says im due 24th august, what are the chances that my baby is my ex boyfriends? im so worried... please help put my mind at ease...