Trying to get some info on what you all think of the dates set forth.

[Jbell1223]

I was with one girl one time on March 7th and she had the baby on Dec 22nd but I seen early on that she posted her due date on fb as Jan 12th. I always think that she was with another guy or guys in the same time region though. So I'm always trying to calculate conception dates to figure out if it could be mine or not.

[Jbell1223]

Thank you for your input Annie Brooke! I'm grateful for people like you on this forum always willing to reply and help out

[AnnieBrooke]

No, not yours.

Babies coming on December 22 aren't conceived in early March; they are conceived around March 31st and that would be if the pregnancy lasted the full 40 weeks. You're saying the baby was originally expected on January 12, meaning the baby was born early (ahead of its original due date).  A baby born on January 12 would have been conceived April 21.  Sex with you was anywhere from three weeks to six weeks before the conception dates that her estimated due date and then the birth date suggest.

If she had gotten pregnant from the sex with you on March 7, her due date would have been November 28, which obviously it wasn't.  And then the baby came December 22, babies don't go almost 4 weeks past their due date.  Even if you leave a little margin for error to account for sperm living a few days in her system, it's a three-week difference.  

In short, the sex with you was way too early to produce her baby.