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LMP was March 22, 2016 

Due date is Dec. 27, 2016.

I had sex with ex man #1 from April 1-3.

And had sex with man #2 April 9th. 

Me and ex boyfriend dated for 4 years and tried one year to concieve with no luck, we would both be in shock and very happy if baby is in fact his.  Do you think there a a chance it could be man #2 According to the dates?  Thank you again for taking the time for this.


Hi Molly,

Your doctor has calculated your due date as 40 weeks after your LMP began.  This is NORMAL.

Having sex on April 1 - 3 would be days 10-12 of your cycle.

You normally will ovulate between days 11-16 of your cycle.  The egg is viable for up to about 48 hours max.  Sperm can survive up to about 5 days max.  You VERY LIKELY had sex with man #1 at/just before your peak fertility.

Unfortunately we can't be sure.  It all depends upon when you ovulated and we can't know that after the fact.  Having sex on April 9 would be day 18 of your cycle.  While less likely it is still possible that you got pregnant then as well.

When did you test pregnant?  Most home tests WILL NOT read a positive until about 14 days after you had sex.

A DNA test is going to be needed to confirm paternity.

Good luck.  Hope it helps.



I tested positive May 1st.


That doesn't help narrow it down unfortunately.

Odds favor it being guy #1 but you'll need the DNA test.