My last LMP was on the 28th December 2017. I had sexual intercourse with a guy the 8th of January 2018. According to an ultrasound, I'm 12 weeks and two days pregnant which means I conceived one day before my period. Is this possible?

Answer

Based on your last period, your fertility window may have been from January 7th through the 17th; that is when you most likely conceived. Conception usually occurs 10 to 14 days after your last period. You are considered 12 weeks and two days pregnant because they count pregnancy from the first day of your last period, even though during those first two weeks you technically are not pregnant.

Updated on March 25, 2018

Original Article:

When Did I Get Pregnant or Conceive?
By Marissa

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