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How accurate are ultrasounds in determining the size of a baby?

dating scan can they be wrong? if so by how much

Despite the fact that sonographers are experts in their field, estimated due dates ( EDD) calculated from pregnancy scans can be incorrect, as Ollysmum76 discovered. “My due date got put back by 2 weeks at the 12 week scan. Original date given was 18 December but at the scan it was moved to 31 Dec. It just doesn't quite. When I count backwards I didn't even have sex on or near that time I'm so confused this is all very new to me I've been going by the scan dates even From my lmp I should be 14 weeks and 4 days but my ultrasound says 13 weeks 5 days so what is the ultrasound actually counting from lol you can tell this. Hi guys Hoping some1 can help put my mind at rest!!! how far out can dating scans be?had the first scan on the 23rd june: my EDD by scan is 7th jan CRL 52MM my EDD by dates is 22nd dec As.

View unanswered posts View active topics It is currently Thu Feb 15, 9: Wed Apr 15, Mon May 04, 9: To be honest, I thought I was 2 weeks in front of my Due date.

Can A Dating Scan Be 4 Weeks Wrong

I went into my dating scan thinking I was 12 weeks and here days but I was only 11 weeks and 3 days. Its so common to lose between a few days to a few weeks at your dating scan. No pregnancy is textbook so changes that happen to your body and symptoms you get don't happen at a certain time.

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When you calculate your due date from your last period you know you aren't pregnant for at least the first few days of it because you're on your period and then it may be a further 2 weeks before you ovulate, depending on your cycle if you get me so at the beginning after that period you're not actually pregnant. Dating scans are the most accurate to go by.

Switch to mobile style. Thanks for any help from anyone better at this whole pregnancy thing than me - or better mathematicians! I have given up trying to make rhyme or reason out of it all!

I dunno if that made sense Thu Jan 01, 5: Mine was wrong hun. They put me over a week ahead which was impossible as I knew the date of conception and I was still on my period when they reckoned I conceived plus I was in the process of moving at the time too didn't just have one big moving day spread it out over a week so the only way my 12 week scan was right is if it was immaculate conception in which case I will sell my story to the paper and never have money worries again lol.

6 week and 1 day dating scan

I really don't have much faith in them to be honest. They're good for checking any developmental problems but as far as dating goes every baby grows at a slightly different rate. A 5lb baby that grows into a 4 foot 8 person isn't going to be the same size as a 10lb baby that ends up growing to 6 foot 5.

I have 10lb babies in my family all through my mums side so didn't surprise me that the dating scan said the baby was bigger but they still insisted that there dates were right and mine were wrong. Like I said in that case I should be rich.

dating scan incorrect?? : Help Wanted !- Emma's Diary Baby Forum

Sun May 03, 7: When i went for my dating scan i was told i was 14weeks All babies vary in size which are why the due date you are given is usually give or take a week or two, but however they are taken source the average sie of a baby and are accurate. Mon Mar 10, 6: Mon Jan 26, 3: Well if you know when you ovulated then that's the most accurate way to date a pregnancy, 12 week scan is next accurate later scans are less accurate.

How long is your menstrual cycle? The due date by LMP assumes a 28 day cycle, if you have a longer cycle then your due date is likely to be later than you work out you're more likely to have ovulated later in your cycle.

Page 1 of 4. I just can't understand it! Of course you have probably already used an online due date calculator. At around 12 weeks you can get more accurate measurements.

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Can A Dating Scan Be 4 Weeks Wrong

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