Need 2nd opinion on paternity

[need2ndopinion]

i'm due june 1st 2013
my LMP was sometime around 25th august,

my first ultrasound on 10/05/2012 I was 6 weeks 5 days

i had sex with my boyfriend everyday up until Sept. 5th, then he went away for a while and I had a one night stand around Sept. 18/19th

my dr said the day i concieved was Sept. 8th, but thats 3 days after me and my boyfriend had sex, he said I could have implanted late.

as i want to believe my dr, i still have doubts about the one night stand.
according to conception calculators if i was to have gotten pregnant on thee 18th/19th of septemeber I would be due in the middle of June.

What do you think?
im 95% sure this baby is my boyfriends, but just wanted second opinions.
please no judgement
thank you

[lauralu2390]

I am kind of in the same position... Dates a little off from yours.... I would say your baby is your boyfriends. Best of luck!!

[jillbrown]

My due date is may 30th . I concieved Sept.6th

[AnnieBrooke]

The conception calculator gives the following for a due date of May 29:

Probable date of ovulation:  September 5
Possible dates of conception:  September 1 to September 9

[need2ndopinion]

On that day he said I was due May 29th

[AnnieBrooke]

So when are you due, according to the doctor?  You said he told you that you were 6w5d on October 5; what due date did the doctor give you on that day?