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Due date and measurement Question?!?

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  • 1 Post By lex1078

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May 10th, 2012, 02:46 PM
Join Date: Apr 2012
Posts: 54
Measuring small or not? I thought I was 7w 2d and at first U/S the baby measured 6w 6d. Changed due date from 23rd to 26th.

Anyone get differing due dates?

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May 10th, 2012, 02:53 PM
Cassie.S's Avatar Proud Mommy!
Join Date: Jan 2011
Location: Illinois
Posts: 9,029
Yeah, at my first appointment I thought I was 7w3d and she said I measured right at 7 weeks. So they moved my due date from the 18th to the 21st.
Cassie, wife to Andrew, mommy to Sophia (5), Landon (2) and expecting baby #3 in June!

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May 10th, 2012, 03:02 PM
Elevin26's Avatar Super Mommy
Join Date: Apr 2012
Location: Florida
Posts: 980
At my 2nd appt they measured me at 8 weeks and I though I was only 7 so bumped my due date up a week from Dec. 3 to Nov. 30.
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May 10th, 2012, 03:52 PM
Join Date: Apr 2012
Posts: 54
Does it mean we ovulated at a later or eariler date I guess?

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May 10th, 2012, 04:01 PM
Super Mommy
Join Date: Dec 2010
Location: PA
Posts: 612
With my first I measured 3 days off, but my doctors didn't change the due date.
Mommy to Lucius (3) and August (2)
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May 10th, 2012, 04:10 PM
lex1078's Avatar Waiting patiently....
Join Date: Jul 2008
Posts: 6,834
Measuring early/late is just a guesstimate and it can be off by a few days, especially this early in the game. It's nothing to worry about.

If I go by LMP, I'm due 12/20. If I go by the u/s measurement I'm due 12/16. So, I'm just using the middle date of 12/18.
Butterbear likes this.

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May 10th, 2012, 05:58 PM
gardenbelle's Avatar Mega Super Mommy
Join Date: Mar 2012
Location: California
Posts: 3,553
My first u/s, the baby was 5 days behind and my second, the baby was 2 days ahead. They kept my due date going off my ovulation date which is Dec 3rd.

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May 11th, 2012, 01:59 AM
Platinum Supermommy
Join Date: Oct 2007
Location: Australia
Posts: 11,657
The first dating ultrasound is the most accurate.

I had an ultrasound a few weeks ago (to date the pregnancy as I didn't know when my lmp was) and I was measuring 8w5d. I had my first OB appt today and he did a scan to double check and I was 10w6d (should have been 10w5d) so a day ahead. My due date isn't moving as he even said the first is the most accurate.
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May 11th, 2012, 08:14 AM
nina9809's Avatar Mega Super Mommy
Join Date: Feb 2009
Location: British but living in California
Posts: 2,582
When it is so early, it is very hard to measure as it is so small. My doctor measures it a few times to come up with exactly where I am..... lol....

Later on in the pregnancy it is easier to measure. Don't move your due date around early on.....

Thank you Kiliki... for my amazing siggie!
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May 11th, 2012, 10:03 AM
MarlowesMum's Avatar Mega Super Mommy
Join Date: Jan 2012
Posts: 2,406
My EDD moved from 12/10 (LMP) to 12/11 based upon the ultrasound scan. That's not a huge difference, but I'm not surprised as I know precisely when I ovulated. I think if you know your actual ovulation time - you can pinpoint your EDD with some fairly good accuracy right off of the bat. Ultimately, it's just up to baby as to when he/she wants to come - so I guess we can't get too wrapped up in those dates anyway.
Maggie - Proud Mommy to 2 Girls
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May 11th, 2012, 10:14 AM
Butterbear's Avatar Mega Super Mommy
Join Date: Apr 2010
Location: Cape Ann, Massachusetts, USA
Posts: 2,131
The baby's growth can vary in those first few weeks so I wouldn't worry too much about a matter of a few days. My first child was due on 10/11 by LMP / ovulation, an early u/s changed the due date to 10/5 and he didn't come until 10/21 (and he had to be evicted!)
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May 11th, 2012, 01:23 PM
gardenbelle's Avatar Mega Super Mommy
Join Date: Mar 2012
Location: California
Posts: 3,553
I agree with Butterbear, the baby's growth varies SO much during the first tri that it's really hard to pin point by ultrasound. All my babies measured behind between 7 and 8 weeks and ahead either before or after. My first born which was from an IVF cycle was 5 days behind at 8 weeks and we knew (to the hour!) how old he was. Once we got into the second trimester, he began to measure 2 weeks ahead. He was all over the place in growth and was born at 39.4 weeks healthy.
My second born was 6 days behind at 7 1/2 weeks, but measured ahead at 6 weeks and at 10 weeks. She was born 13 days over her due date and had to be evicted.
This little one was 5 days behind at 7 1/2 weeks but ahead at 10. Because I knew the ovulation date and because of my history of that lag time, we used that.
I guess the only way to really know your due date with complete accuracy is if you know the day that you ovulated.

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May 11th, 2012, 01:37 PM
-erin-'s Avatar Co-Host of the May2010 PR
Join Date: Sep 2009
Location: Florida
Posts: 10,040
For my daughter, my due date by LMP was June 1. My first u/s (~6w) gave me a due date of May 27. 3 weeks later another u/s put me at May 28, and I think another one around 12w put me at May 26. They never changed my official due date from June 1, but I always considered it May 27. They said they wouldn't change it unless it was more than a week different. I measured ahead the whole pregnancy, but my DD had to be "kicked out" (induced a week after my official due date).

But anyways, that's why it's just "estimated."

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May 11th, 2012, 07:49 PM
taatie10's Avatar New Mommy & Pro Auntee
Join Date: Aug 2008
Location: Northern AZ
Posts: 5,895
My due date changed 3 times from what I was guessing when I first found out. I thought 12/20 then to my Dr's guess based on my quants of 12/21, then first US moved it to 12/19 based on gestational sac size. Then my 6 week US moved it to its official date of 12/18.

Then at my 8 week US baby was measuring 2 days ahead but we arent changing the date anymore.

Thank you for the amazing siggy *Kiliki*

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