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11th-Dec-2012 01:08 pm [size of the baby]
I went in for a growth scan, and the baby is measuring 6lbs 2oz, and I am 34w2d. He was also measuring very large at my 26 week appointment. I wasn't getting a period when I got pregnant, and they normally base your due date off of LMP. He's been measuring 'big' since 12 weeks, and I've been negative for GD twice now. I think my due date is off, and I've thought so from the beginning. Have you ever had a due date changed? Or know someone who has? I know the ultra sound weight can be off, but it doesn't make sense to me that the ENIRE TIME he has been measuring 'big' and they haven't thought I'm further along.
11th-Dec-2012 06:12 pm (UTC)
He might come early because you are further along than you thought but why change the due date? It gives you more time to breathe before induction gets discussed and if he comes early then it is just a bonus!
11th-Dec-2012 06:13 pm (UTC)
I guess so I'm more prepared? I was a week "late" with my first so they are expecting this again, which is totally fine, baby can bake as long as he pleases, but it just doesn't make sense to me :\
11th-Dec-2012 06:17 pm (UTC)
But..even if they alter the due date, you still have no idea when he might choose to make his appearance sooo....

There are some legitimate risks to changing a due date to an earlier one, like being induced early then having a baby whose lings werent ready.

A due date is nothing but an educated estimate anyway. Dont put too much stock in it.
11th-Dec-2012 08:47 pm (UTC)
12th-Dec-2012 12:06 am (UTC)
This!! I don't understand why people get so caught up on due dates, anyway.

*except, of course, to argue for a later one to avoid inductions that may not be necessary

Edited at 2012-12-12 12:07 am (UTC)
11th-Dec-2012 06:34 pm (UTC)
I had an ultrasound at 36 weeks where I was told my baby was "definitely" 8 lbs. already. He didn't weigh that much when he was born a month later.
I'd be thankful they don't want to change your dates.
11th-Dec-2012 06:39 pm (UTC)
I went through a while of assuming I'd have a monster baby because he measured so far ahead during ultrasounds. In the end, he was born on his due date and weighed 7 lbs. 6 oz. ... he's still wearing NB clothes at 16 days old, which sucks because I stocked up on 0-3 and larger clothes and now he doesn't have very many outfits to choose from. =p
12th-Dec-2012 01:47 am (UTC)
Haha I'm the same way! I was lucky & had a friend gift me a BUNCH of newborn stuff that her son wore. It came in handy! I had a feeling I'd be having a 10 pounder, but my baby was born (I was induced at 38.5 weeks due to PIH) at only 8 lbs. The growth scans aren't always too accurate. A good sonographer will tell you that... As mine did when I had my 32 week ultrasound & it showed that my baby was measuring ahead. Good luck!
11th-Dec-2012 06:47 pm (UTC)
Ultrasound weight estimates can be off by quite a bit, as so much depends on baby's position and where the tech measures from, so I wouldn't let it stress you out too much. Measurement of fundal height can be affected by your hydration levels, baby's position, how you're carrying, how many pregnancies you've had, and who is doing the measurement. With my 3 year old I measured big the whole time, was sure I was due a week earlier than my OB's EDD, an u/s at 36w estimated his weight at 7 1/2# and gave many of his averages as 41-42w, and he was in fact born 2 days before MY EDD and weighed in at 9#2oz. My 1 year old I measured big the whole time, at an ultrasound at 36w they estimated his weight at 8 1/2#, when he was born at 38w6d, he weighed 7#9oz.

And as someone else pointed out, the later due date gives you some breathing room in case baby is late. The only way I could see it being an issue is if they're off by more than 3 weeks; baby's born before 37w based on your OB's EDD are automatically labeled 'pre-term', which in some hospitals means automatic monitoring or a trip to the NICU.
11th-Dec-2012 06:49 pm (UTC)
"The only way I could see it being an issue is if they're off by more than 3 weeks; baby's born before 37w based on your OB's EDD are automatically labeled 'pre-term', which in some hospitals means automatic monitoring or a trip to the NICU."

THIS is what I'm concerned about. I don't want them to be trying to stop labor if it's 'too early' or sending him off to the NICU if it's not needed.
11th-Dec-2012 07:01 pm (UTC)
I'd talk to your OB about it, if you haven't already, and see what their policy is. When you go on the hospital tour, they should be able to answer about the hospital's policy, and if they can't, you can always ask to speak to the nursing supervisor or the charge nurse on the OB floor and ask them about the hospital's policy.
11th-Dec-2012 07:02 pm (UTC)
Going to talk to him on Thursday, thank you! :)
11th-Dec-2012 08:34 pm (UTC)
I still wouldn't give the ultrasound weights too much thought--my second was measuring very small the entire pregnancy, so much so that they kept doing ultrasounds thinking she must have IUGR (she didn't); a few hours before she was born they did a scan and tsked & said she was "maybe 5 lbs on the high end"--she was born 6 lbs 6 oz (37 weeks) about seven hours later.
11th-Dec-2012 08:36 pm (UTC)
My second measured at over 10 lbs and 42.5 weeks gestation at a 37 week ultrasound (ordered b/c my fundal height was measuring large and GD had been ruled out. He was born at 40 weeks, 4 days weighing 9 pounds.
11th-Dec-2012 08:46 pm (UTC)
Due dates change all the time, and I don't like how obsessive doctors get about the LMP. I'm in the first trimester, and when I went for an ultrasound, on the information I had to give when booking over the phone, she was saying that I should be over 12 weeks etc due to my LMP. I told her that my cycles are long and that this was not accurate (I was temping and charting) and told her I had a previous ultrasound that showed this. She believed it based on the previous ultrasound, but otherwise it's so hard to get out of that LMP mind set for some medical professionals.

I think due dates are a general guideline rather then a rule.
11th-Dec-2012 08:46 pm (UTC)
6 lb doesn't seem that high. babies typically put on about half a pound a week towards the end. that's only a 9 pound baby at your current due date, perfectly average.

the flip side of course is that the weight guess might be way off. they typically don't change due dated based on u/s outside the first trimester, because the weight guesses can be off by 3 pounds. they say a pound either direction, but anecdotally, I've heard up to 3 pounds off.
11th-Dec-2012 10:18 pm (UTC)
Agreed - I had an ultrasound last week (32w6d) and both my twins were estimated at about 4.5 lbs, so 6 lbs at 34 weeks doesn't seem outrageous, and that's assuming it's correct.

I agree with most of the other comments here too... other than checking with your hospital to make sure that bub won't get automatic NICU time if you deliver at "36w5d", I think it's probably better to have a due date that's off in the too-early direction than the too-late direction so you don't have to fight about induction.
11th-Dec-2012 09:58 pm (UTC)
I measured "big" the whole time with my first and I ended up delivering 10 days early. They never changed my due date, but to this day I think my due date was wrong.
11th-Dec-2012 10:49 pm (UTC)
they will assess the baby when he is born. if your dates say you are 36w5d but your baby is huge and pink and crying and doing well, they won't automatically take him to the NICU. I can only see this being a factor if you are planning a birth center birth or homebirth where you would be risked out for being predates. if not, then i agree with everyone. thank your lucky stars they aren't trying to change anything. labor is not stopped after 34 weeks generally. and if its before that, you'd want it stopped anyway, even if the dates are a touch off
11th-Dec-2012 11:01 pm (UTC)
I measured 4 weeks ahead from 29 weeks on and at a growth u/s at 36 weeks, she was almost 7 lbs. I delivered at 40w6d and she was 9lbs 8oz. Personally, I wouldn't sweat it because late u/s are notoriously off and if your edd really is off, then you have more time before an induction talk.
11th-Dec-2012 11:08 pm (UTC)
Big babies are easier to birth
12th-Dec-2012 12:17 am (UTC)
You've already gotten tons of feedback about the inaccuracies of ultrasound weight estimes -- I'll just concur.

How was your due date established? Was is based on a single date of unprotected intercourse or a small closely spaced group of dates? Fertility awareness data about when you ovulated? A first trimester dating scan? A second trimester ultrasound? A bimanual exam? I ask because certain methods are far more accurate than others.

If your due date was calculated based on a date of unprotected intercourse, fertility awareness tracking, or a dating scan any time between 5 and 11 weeks (as measured by that scan) -- then the original method of dating is far more accurate and reliable than later ultrasounds. If your due date was calculated some other way, then I would be suspicious that your "measuring ahead" visits indicate an earlier due date.
12th-Dec-2012 02:12 am (UTC)
At 35w3d they estimated my son at 6lbs 14ozs. He was born today at 39.2 at 7lbs 13 ossify. Estimates can be off.
12th-Dec-2012 02:56 am (UTC)
I know someone who every time she went to the doctor they changed her due date...
12th-Dec-2012 04:37 am (UTC)
I think it depends on how your due date was confirmed... it might be that they only went off last monthly period, in which case it could be iffy if you have unusual cycles etc.

That said there are key development points along the way that can be confirmed and checked by ultrasound - a baby of 12 weeks gestation (when you might have had an ultrasound) would have vastly different development markers (especially in the stuff they check for Down's etc) than a baby of say 14 weeks... so the 'measuring big' thing could be genuine - it might be there's been other evidence to say that the baby is X weeks, but large for it's size at that point in time. I suspect because you've had a couple of u/s they've probably checked some of those development points too. And an u/s in the first 8/10 weeks is considered very reasonable for dating accuracy so if you had one then... which if you didn't have your period before conceiving again is likely.... then I'd trust that date.

I wouldn't want the date brought sooner! You risk immature lung development, kidney and liver development etc - a couple of weeks is huge in some of this stuff - if the baby comes early of it's own volition then great, but trying to bring it earlier increases your risk of spending at least a bunch of days hovering over a crib in NICU :(

13th-Dec-2012 05:37 pm (UTC)
They changed my due date at the first ultrasound, but only by a week. Surely if there is such a large discrepancy they would change the date?
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