That lines up with what the conception calculator says.
First day of last menstrual period: November 16, 2012
Probable date of ovulation: November 30, 2012
Possible dates of conception: November 26 to December 4, 2012
Due date: August 23, 2013 (40 weeks)
Does your boyfriend know you had sex with someone else on November 26? Unfortunately, the dates are too close together to rule out the first guy entirely, whether or not he ejaculated in your body. I assume you will have a DNA test when the baby is born?
Well, if the secret will keep and you never intend to cheat again, you could get a DNA test with your ex when the baby is born. I don't recommend never testing, it is neither fair to the men nor to the baby.
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