I had intercourse with a guy on the 6th of June... Then I had my cycle on the 18th.. Then me and my boyfriend got back together on the 29th.. I found out I was pregnant when I missed my cycle in the middle if July! The due date giving to me was march 25 2013 based on my LMP.. Then I went for an ultra sound on Halloween n they changed the due date to march 21st 2013 Just a four day difference! Who would be my child's father! Is it possible to had gotten pregnant in 12 yo 13 days n then had a cycle

Many women bleed during pregnancy and mistake it for a period. It's entirely possible that the bleeding you experienced after having sex with the first guy, was not a period at all.

Bottom line, there's really no way to determine who the father is by a due date. Due dates are a best guess and can be off as much as 2 weeks either way (a month in total).

The only way to determine who the father is will be a DNA test after the baby is born.

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Originally Posted by Alty

Many women bleed during pregnancy and mistake it for a period. It's entirely possible that the bleeding you experienced after having sex with the first guy, was not a period at all.

Bottom line, there's really no way to determine who the father is by a due date. Due dates are a best guess and can be off as much as 2 weeks either way (a month in total).

The only way to determine who the father is will be a DNA test after the baby is born.

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This was a full blown cycle! I keep up with dates monthly even ahead of time ! N I came on right on schedule for like 6 days as usual ! Heck I don't know well just have to see

Yes it is possible to have a "full blown cycle" while not common it does happen. Some women may even have two or three and still be pregnant.

But yes, the only way that you can "see" is to have a DNA test done to be sure when baby is born