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Childbirth/when did i become pregnant

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Expert: - 7/29/2009


Question
my last menstrual cyclye was on the 24 feb 09 , and usually have 29/30 day cycle so was given the due date of 3rd of dec on the 18 of may i had a scan, which i should have been 11 weeks and six days, but she gave me 11 weeks and two days, which would make my due date 5th of december, when about in march would i have got pregant, and which date is more accurate ? thanx

Answer
Debi,

In either case, due dates are generally not changed unless they are found to be more than two weeks different.  The further you get into pregnancy, the more ultrasound can be off, by as much as two weeks in either direction.  4 days is nothing to worry about, especially if the first date given was determined by your last period, not an ultrasound.  

Both dates are very close, meaning you conceived between the 10-14th of March.




Best,
Catherine

Childbirth

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Catherine Beier MS CBE

Expertise

I can provide evidence-based information and current research findings concerning childbirth and pregnancy. My specializations include natural childbirth, pregnancy and birth interventions, fetal positioning, labor induction, choosing a care provider, midwives, homebirth, unassisted birth, natural pain relief, medications in pregnancy and birth, informed consent, understanding the risks and benefits of childbirth choices, doulas, waterbirth, childbirth methods, childbirth education classes, cesarean section, and VBAC.

Experience

I have been a childbirth educator, mother, author, public speaker, researcher, and birth advocate for the past 9 years. I am also the author of Giving Birth Naturally, a site dedicated to natural childbirth and pregnancy information. I publish evidence-based articles on pregnancy, childbirth, newborn care, and post-partum care. I'm also a mother of three children, two daughters and one son all born naturally. To learn more about what normal birth looks like, view the natural childbirth video of my son being born at home unassisted.

Publications
My book, Birth Outside the Box, was published in 2007.

Education/Credentials
I hold a Master's degree in communication disorders with an emphasis in child development. I am also an independent childbirth educator.

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