im new to this site didnt no what subject to put this in, well the thing is i have regular sex with my fiance and had a stupid 1 night stand with an ex on the 30th january my last period was 9th january, i had a scan to date and am now exactly 10 weeks which in my eyes would rule out my ex but after talking with doctors they think not if it was my exes i would be 8 weeks 4 days right? my partner knows all about the situation but i am too scared to go ahead in case the scan was wrong even though they said it is very accurate i cant see how i can be further if i slept with the only 8 weeks 4 days ago and i have also read alot on concieving and alot says it takes between 3 and 5 days to become pregnant so tht would make me even less if it was exes please help me i really want this baby to be my partners