Baby measuring 27 weeks

caydensmom · May 18th, 2009, 09:48 AM

I went to an informal ultrasound on saturday and I was 26 weeks exactly but the sonographer told me that the baby is measuring one week ahead at 27 weeks. I asked him if this changes my due date, he told me No. So what does that mean? The baby is just a big baby ( ouch sorry for my bits) or what? Anyone have any experience or going through the same thing? He did tell me the later you get in the pregnancy the more inaccurate the ultrasound becomes. Other than that my prince is doing just fine, he was upside down too lol!!!

GersPrincess · May 18th, 2009, 09:52 AM

I think it also varies between each machine. As for the accuracy thing, that's why they like to give dating scans around 12 weeks, as up to that point, most babies grow at the same speeds. The bigger they get, the more like their parents they become, so if you or your hubby are tall or have long legs, then you're baby is likely to be a bit bigger than a couple who are both 4ft. I dont think it makes a lot of difference unless there is a huge difference in what your baby should be measuring.. like 4 weeks more or something.

highlandlassi · May 18th, 2009, 17:56 PM

When you go for an ultrasound and they give you dates according to measurment, there is a ten day allowance on either side. basically that is how accurate the machines are: within ten days. so your baby measuring 27 weeks at 26 is only 7 days off making it just right! i have had many ultrasounds and the doc is using my six week one for dating as she said it is more accurate than, my 10, 13, or 20 week u/s

Duffy6684 · May 18th, 2009, 18:59 PM

wow I didn't know that. I measured 3 weeks bigger with my first son and he was 10lb10oz when born, needless to say thats what I put it down too lol

charliesmom · May 18th, 2009, 22:45 PM

I'm also measuring a week ahead and they are not changing my dates. The measurements are 1 or 2 weeks plus or minus for error - this is why they don't change and go by your LMP - if you are sure of your LMP.

Anna1982 · May 19th, 2009, 06:49 AM

hiya

Morgan always measured bigger than my dates, by a good 3 weeks and guess what he was 3 weeks early and 8lb 10

Pyrrhic · May 19th, 2009, 06:50 AM

I measured three weeks ahead, and Niamh was pretty small (7lbs 11oz) and is still a tiny baby. She measured ahead because she was long, not big.

rubyrose · May 19th, 2009, 11:45 AM

I measured ahead as well, i had a early scan was 8 weeks 2 then when i was meant to be 12 weeks i was 12 weeks 5 so they used my 12 week scan date. A my 22 week scan i was a week ahead but she said she was going to leave it, i don't know why!

pootle33 · May 19th, 2009, 11:48 AM

Hi

I got told the same thing at my 20 week scan last week - she said I was measuring 5 days ahead but due date not changed (I am very certain of LMP and cycle was always 28/29 days as well). Mind you I am 5'7 and OH is 6'2 so could just be long as someone else said.

cleckner04 · May 19th, 2009, 12:14 PM

I measured ahead also and just asked the doctor today about it as I was concerned she'd be big as well. The doctor said you never really know how big the baby will be because the measurements are just an estimate and they aren't all that accurate. I think babies have growth spurts at different rates as well with big growth spurts and than slowed down growth periodically. I think you'll be fine.

May 18th, 2009, 09:48 AM	#1
caydensmom Pregnant (Expecting) Active BnB Member Join Date: Jan 2009 Posts: 245	Baby measuring 27 weeks I went to an informal ultrasound on saturday and I was 26 weeks exactly but the sonographer told me that the baby is measuring one week ahead at 27 weeks. I asked him if this changes my due date, he told me No. So what does that mean? The baby is just a big baby ( ouch sorry for my bits) or what? Anyone have any experience or going through the same thing? He did tell me the later you get in the pregnancy the more inaccurate the ultrasound becomes. Other than that my prince is doing just fine, he was upside down too lol!!!

Status: Offline

May 18th, 2009, 09:52 AM	#2
GersPrincess Mum (Mom) BnB Addict Join Date: Feb 2009 Location: Scotland Posts: 2,581	I think it also varies between each machine. As for the accuracy thing, that's why they like to give dating scans around 12 weeks, as up to that point, most babies grow at the same speeds. The bigger they get, the more like their parents they become, so if you or your hubby are tall or have long legs, then you're baby is likely to be a bit bigger than a couple who are both 4ft. I dont think it makes a lot of difference unless there is a huge difference in what your baby should be measuring.. like 4 weeks more or something.

Status: Offline

May 18th, 2009, 17:56 PM	#3
highlandlassi Pregnant (Expecting) Active BnB Member Join Date: Feb 2009 Posts: 255	When you go for an ultrasound and they give you dates according to measurment, there is a ten day allowance on either side. basically that is how accurate the machines are: within ten days. so your baby measuring 27 weeks at 26 is only 7 days off making it just right! i have had many ultrasounds and the doc is using my six week one for dating as she said it is more accurate than, my 10, 13, or 20 week u/s

Status: Offline

May 18th, 2009, 18:59 PM	#4
Duffy6684 Mum (Mom) Active BnB Member Join Date: Apr 2009 Location: Falkirk, Scotland Posts: 573	wow I didn't know that. I measured 3 weeks bigger with my first son and he was 10lb10oz when born, needless to say thats what I put it down too lol

Status: Offline

May 18th, 2009, 22:45 PM	#5
charliesmom Mum (Mom) Active BnB Member Join Date: Sep 2008 Location: California Posts: 863	I'm also measuring a week ahead and they are not changing my dates. The measurements are 1 or 2 weeks plus or minus for error - this is why they don't change and go by your LMP - if you are sure of your LMP.

Status: Offline

May 19th, 2009, 06:49 AM	#6
Anna1982 Mum (Mom) BnB Addict Join Date: Aug 2008 Location: Wakefield Posts: 2,856	hiya Morgan always measured bigger than my dates, by a good 3 weeks and guess what he was 3 weeks early and 8lb 10

Status: Offline

May 19th, 2009, 06:50 AM	#7
Pyrrhic Mum (Mom) BnB Elite Join Date: Mar 2008 Posts: 14,567	I measured three weeks ahead, and Niamh was pretty small (7lbs 11oz) and is still a tiny baby. She measured ahead because she was long, not big.

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May 19th, 2009, 11:45 AM	#8
rubyrose Mum (Mom) Join Date: Dec 2008 Location: Essex/East London (UK) Posts: 990	I measured ahead as well, i had a early scan was 8 weeks 2 then when i was meant to be 12 weeks i was 12 weeks 5 so they used my 12 week scan date. A my 22 week scan i was a week ahead but she said she was going to leave it, i don't know why!

Status: Offline

May 19th, 2009, 11:48 AM	#9
pootle33 Mum (Mom) Active BnB Member Join Date: Jan 2009 Location: Scotland Posts: 457	Hi I got told the same thing at my 20 week scan last week - she said I was measuring 5 days ahead but due date not changed (I am very certain of LMP and cycle was always 28/29 days as well). Mind you I am 5'7 and OH is 6'2 so could just be long as someone else said.

Status: Offline

May 19th, 2009, 12:14 PM	#10
cleckner04 Mum (Mom) BnB Spammer Elite Join Date: Jul 2008 Location: San Diego, CA Posts: 21,311	I measured ahead also and just asked the doctor today about it as I was concerned she'd be big as well. The doctor said you never really know how big the baby will be because the measurements are just an estimate and they aren't all that accurate. I think babies have growth spurts at different rates as well with big growth spurts and than slowed down growth periodically. I think you'll be fine.

Status: Offline

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