Can a 12 week dating scan be wrong

Jan 20, Yesterday I was exactly 32 weeks pregnant, I had to have an emergency scan because I'm very big. My baby is 5lb 9oz which puts me at.
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I know that I conceived on one of 2 occasions in one week. I haven't worked out if those fit with my dates, maybe I will do that! I know my friend was measuring a couple of weeks ahead at 12 weeks, but is back to what she should be now, at 20 weeks. As others have said, there can be huge variation! Bsmirched , Jul 29, Hi new to writing on here but have been reading lots of useful advice from you all.

Dating scans work on the assumption that the length of all babies in the first 14ish weeks progress at exactly the same rate. Which seems a bit odd to me considering that length of cycle, birthweight and everything about the mother vary such a lot. A friend of mine had her dates pushed back by about 3 weeks, only to have her baby 5 weeks 'early' but with no more complications than you would expect for a 2 week early baby, she is firmly convinced she was right all along!

Sorry to hear it can put some people in such difficult situations. Guess it varies place to place, or my midwife doesn't trust the sonographer! She'd already written Dec 6 on my file the scan results say Dec 2 but they have left Dec 6 as the date for my MAT B1 form, lets face it, won't make any difference to when the little person decides to arrive! When I had my son, I was moved forwards by almost two weeks and despite what I said they refused to change it. When he was delivered by section at 37 weeks, he was apparently a typical 35 week old baby - small and very hairy!

Welshlizzie , Jul 29, I have questioned this also.

I know exactly when i conceived can't be any other time unless i'm a medical marvel! I went into meltdown as this has implications for me also but my hubby assures me it just can't be when they said it is!

Time for your 12-week scan? Here's what to expect...

I don't think it is exact. LRRS , Jul 30, I should have said a super sperm has made my baby - and me a biologist tut tut! Anyway I found this online From early on in pregnancy, babies grow at different rates, so these numbers are merely averages. Your baby's actual length and weight may vary substantially.

Don't worry too much if an ultrasound indicates that your baby is much smaller or larger. Your practitioner will let you know if it's time to worry about how big your baby is. By full-term, your baby may end up weighing less than 5 pounds or more than 9. Hope this doesn't offend you LRRS, and believe me my husband can be a bit of a know, but seriously this guy is an idiot!

Personally from my 3 pregnancies I reckon you as women need to go with what you believe - we're usually going to know best about our bodies. They usually get stuff wrong from the scans.

Can your pregnancy scan give the wrong due date?

My last bump was huge and from the extra growth scans I had they were predicting a 10 pound plus baby, right up until minutes before he was born by section. He was 8 pounds 10! Sorry to hear about your situ LRRS. It did feel very much of, 'Yes, you're the next on my list of people to scan'. I did note that there were sort of no introductions, for instance she didn't sort of say, 'I'm.

There was not very much rapport building, I didn't feel. I didn't particularly feel I needed that personally, but it did cross my mind at the time that had I been feeling more anxious than I was, or perhaps if I'd been on my own, it didn't feel the most comforting of environments. Sometimes the week scan is performed at the same time as the booking-in visit with the midwife, so there has been little time to discuss beforehand what might happen.

For some people, the dating scan is the point when they discover that their baby has not survived.

Why a Doctor May Change Your Due Date | What to Expect

Several people described what a terrible shock this was, and how they did not feel prepared for this possibility. And just thinking back to that first scan, what was that experience like, and how was the news communicated to you? It was a terrible shock, I think, because it was my first pregnancy.

I was then very inexperienced. I hadn't even heard of, I'd heard of miscarriage and the sort of regular things that go wrong with sort of early pregnancy. So when the lady who was scanning me asked me if I was sure I was pregnant, I mean I just did not understand what she was saying. So I mean I thought I was 14 weeks pregnant. I probably could've understood if she'd said the baby's died or there's something wrong with it.

But when she asked me if I was sure I was pregnant I just, you know, I just couldn't comprehend what she was saying. And then she showed me a picture of the womb and there was nothing there.

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It was, I think I was in shock for about a week, I just sort of couldn't understand sort of what had happened. Did your husband come with you to the scan? No, he didn't actually. I mean, we've always been, you know, sort of quite independent, and I actually just went with my sister.

Will I find out the gender of my baby at 12 weeks?

I didn't, I suppose that's one of the sort of, it was the sort of first example, I didn't see it was like a sort of massive thing. Even though I was definitely nervous, because I thought, you know, it might have died or something, you know. It might have gone wrong. But I definitely wasn't prepared for what had happened to have happened.

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And then I called him and, you know, he came along and was then with me until I went home. But I think it was just the emptiness of the whole experience afterwards. You feel sort of numb with kind of disappointment and upset.

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And I think because I feel so dreadful in early pregnancy that it completely stops my life, so you feel like you've had - not that it's been wasted - but you know, I can't do anything, I'm just constantly sick, you know, just feel terrible, and you just feel so let down. You just think, 'I've gone through all that for nothing, and I've got to go through it all again if I want to get pregnant again'. So it feels like quite an upheaval to get over that sort of, those feelings. And then I knew that this isn't right. And then she did an internal scan and she said - she first, when she couldn't, she said, "Oh, I can't, I'm, I'm" - I can't remember how she phrased it but she didn't say in an alarmed way, "Ooh, there's a problem," but she did say, "Oh, I'm having trouble.

Would it be OK for me to do an internal scan? So she explained when she thought, what size the fetus was and so how old it was when it had died, and offered me a photo and said, you know, she gave me a bit of information. And then after that I saw a GP as well, but that was obviously partly because there was going to be a procedure involved to, you know, I went into hospital the next day. But she, the GP then explained what the, and they were very, I think it was dealt with in a very sensitive way then.

It was very supportive. I think it was handled as sensitively and as kindly as it could have been, I think. It's more that before I had the scan, knowing what the chance, knowing that information about what the chance of miscarriage was.


And that's a difficult, I can see how for a GP that's hard, if I go and I say, 'I've found I'm pregnant,' and to say "Well, you know, this is, you'll have a scan then but you must be aware that" - I know that's really hard and that people - when I've just said that, you know, I was feeling so elated and that it was very sort of mundane, but actually they could've explained why they were being quite mundane about it, I think and just sort of saying, I don't know, I think I mean, you know, and had to hare sort of, like - I don't know, what is it? Two hundred miles down the motorway, feeling absolutely like ghastly, you know.

Because they were not expecting any problems neither of these women had their partner with them, although both had taken a friend or relative instead and were glad not to be alone. One of them explained how she knew straight away from the sonographer's behaviour that something was wrong, even though she was supportive and tried not to make her anxious. She was given a photo to keep. Another mother who had paid for a private scan was touched that the staff returned her money when the baby was found to have died. A dating scan cannot usually provide an assessment of the risk of the baby having Down's syndrome, but occasionally it can detect very obvious problems.