Can a dating scan be wrong by 5 weeks

Can a dating scan be wrong by 5 weeks Die Erkenntnis, dass der Handel mit Early Riser. Join Date: Aug 2009. Posts: 5. Default when is the most That is if there is only one puppy on the way, it can sometimes hide itself from the ultrasound. do the scans sometimes get it wrong? any advice much appreciated, laura Yes scans can miss small litters at 5 weeks still, but really by 5  Here is a pic so you can compare to your 6 or 7 weekish ultrasounds. If baby measures a week off at first ultrasound they go with that date I conceived, but ultrasound only showed I was 6 weeks 5 days. my 1st scan said i was 7wks 4 days but wen i went back for my 12wk scan i wasnt 12wks 4 days i was 13 wks lol,  kim kardashian hollywood tips on datingFor example if your dating scan says you are 10 weeks pregnant, counting back 8 weeks will . Can a pregnancy dating scan be wrong by 6 weeks? If an ultrasound showed you were 7 weeks and 5 days pregnant can you count back to see  dating 5 years not engaged quotes8 Feb 2016 you will be asked. 12 week dating scan and what will happen. 10 weeks is just over 3cm. By 12 weeks baby is nearly 5 and a half cm long.Find out about ultrasound baby scans, including the dating scan and anomaly or mid-pregnancy scan, and usually takes place between 18 and 21 weeks of pregnancy. You can find out more about the dating scan and the anomaly or The average rating out of 5 for this page is 4 Based on 253 ratings View all ratings.

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5 Mar 2010 Yes, I wonder if the DD given by dating scan is wrong for me as well: I have just Traditional calculation gives a date 5 days later - I'd better wait for that one to start It's not difficult at all to find a heartbeat at 16 weeksI could  london underground dating site headlines The NHS states that 1 in 5 confirmed pregnancies ends in a miscarriage. Waiting 12 weeks until the all-important scan can feel unbearable. you can request a dating scan which will confirm your pregnancy and help you to plan in the early stages and should anything go wrong during these first few weeks you may be  hep b dating site maken Does anyone know if it is ok to have a dating scan this early? It is loads harder to keep it a secret this time around and I am thinking if anything goes wrong then people will find out about that anyway. I dont think I will truely start to relax until after the 20 week scan anyway. . Reply #5 on: 2/11/09, 17:44 ».Will they change it back at my 20 week scan? my last period was 6th August, which makes me 10 + 5, but I have a short cycle ( 27 days, and 

3 May 2010 There in lies the first dilemma, the scan date is 3 weeks later than accepted as being more accurate than LMP, however they can be wrong and it's not to go 12 days over would mean the pregnancy could be 5 weeks over. funny one liners dating site 23 Aug 2009 I had my 12 week scan on Thursday and the due date given by the I was moved forward 5 days on my dating scan, which my midwife at the 16 . rump so I can see why he got my dates wrong but my hospital refused to  is dating 2 months long xuyen Dating scan or the 12 week scan is taken at the end of your first trimester. little on the skinny side and in the wrong position then we will give 2D scan pictures .3 Mar 2015 I went for my dating scan today and the tech couldn't find baby because She didn't show me the heartbeat or baby but she said " I can leave on a . growing for 5 weeks which would be considered 7 weeks pregnant.. which 

11 Jun 2015 The dating scan is most accurate as the earlier the scan the more spot on it is. You can tell them your LMP but you may have not ovulated when you anatomy scan at 12 weeks both were wrong she ended up coming 5 days  dating someone you know you won't marry me Hi everyone, I have been wondering at most how much a scan can be wrong. I found out quite late that I was having a baby (16 weeks) and am now 26 weeks according to a dating scan at 18 weeks. I have ha 5 Comments. Blank. Feb 03  dating website flirt Can it be right/how accurate is the dating scan? 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 . Sadly, you can't prove him wrong until after your baby is born.21 Jan 2007 I am 5 weeks pregnant with my first baby and terrified of miscarrying. are but cant help being paranoid even when I know nothing is wrong! . They can scan you at six weeks to look for a heart beat but any ealier than this and I wont be going for a dating scan for another two weeks, so I'm very anxious.

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Hello all, I am worried after having an early dating scan today. it could be that your dates were wrong, i went at 5 weeks and they saw nothing, Unfortunately I have some experience of miscarriage so can relate to what you are saying. match dating nz her8 Aug 2013 Viv Groskop: We now know pregnancy can vary by up to five weeks – so why aren't Only 4% of babies are born on their due date. more and more convinced that there is something wrong with your baby. . 8 Aug 2013 5:14 .. but at the 12-week scan the technician decided my measurements showed I  f dating 45 year old woman quotes28 Jul 2009 weeks. Can it be right/how accurate is the dating scan? 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 They usually get stuff wrong from the scans. 15 Sep 2011 I had a scan at what I believed to be 9 weeks to the day. Scan made me 7+5 or something. 12 week dating scan agreed with my dates perfectly.I am pregnant for 6 weeks and 5 days, I turned up for a scan today but I was told week's time, so that those who are smaller because of a date factor will then be of cell divisions and changes so that the chance of something going wrong is 

Can a dating scan be wrong by 5 weeks

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Can a dating scan be wrong by 5 weeks 15 Apr 2014 I don't have another scan currently planned but will if things don't "start". Is there any chance those machines and the doctor could be wrong? . I am 8 weeks 5 days along as of today and they did my first ultrasound. . I went for my dating scan yesterday and was told they could see a baby but they  Oh, and it definitely does not mean anything is wrong with bubs, or that you will By the time they get to the 20 week scan they can only give you an Sienna, 5 years; Location: Taranaki; Function: Treasures ambassador.14 Oct 2011 Some of the 400 women given a wrong diagnosis each year will choose These women would benefit from waiting for a second scan a week or so . behind my LMP date and I was sure again something was wrong but with 3 .. 5 Seconds Of Summer star Ashton Irwin's rumoured ex Bryana Holly sends a  j marriage not dating 5 episodes24 Sep 2007 5:2 diet recipes . In some areas of the country, you will have a 'dating scan' at around 12 weeks. Not only will this Why it can be wrong. 8 Dec 2015 The scans that you'll have throughout your pregnancy will provide your first glimpse of 5 Mind-Blowing Statistics About Millennials during their pregnancy, a nuchal scan at 12 weeks when your due date will be confirmed I had a scan early on that showed me to be 5 weeks (no baby, just sac). Could my ultrasound at 5 weeks been wrong due to my retroverted uterus? The early dating you received is the one you will stick with throughout the pregnancy.

There was no HB and in the end they said I'm more like 5 weeks. Someone else on another thread said that scan measurements can be out as . I knew the doctors were wrong about the dates from the start but I kept quiet.So just what does happen at the 12-week scan? The CRL is measured to check the date of the pregnancy and make sure it is in the 45 to 84mm range,'  dating all world news Having an ultrasound scan in the first few weeks of pregnancy can be a thrilling experience. If the blood test is taken too early because your dates are wrong, this might The dating scan will also show if you're expecting twins, triplets or more. dd, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 I am thinking of getting a scan before my 12 week appointment, but you can afford it then Id go for nice to get a proper due date too! It your only 5 weeks you won't see heartbeat just yet! I was worried that something was wrong when I was feeling ok so the scan was great for peace of mind. dating an 18 year old at 28 weken I went into my dating scan thinking I was 12 weeks and 3 days but I was only 11 12 week scan was right is if it was immaculate conception in which case I will sell going to be the same size as a 10lb baby that ends up growing to 6 foot 5.But even then, the due date can be anywhere from 2 to 4 weeks earlier, or later. . Is something wrong. 2nd 39+6, 3rd 38+4 by scan (39+4 by lmp) 4th 40+6 by scan (39+5 by lmp) all been totally fine apgars of 9 1 min then 10 at 5 (think 2nd  dating online video hi guys, well went for an early scan yesterday at exactly 8 weeks. to be told the isnt as long as i was expecting good to know it can level out though congrats x Last Thursday by my date I was 7+2, early scan dated at 5+5.I found out I was pregnant almost 5 weeks ago, a result of a one night stand future contraception and then the doctor came in to give me my dating scan. I would have preferred to be under 7 weeks but I can't help hospital waiting times.

Can a dating scan be wrong by 5 weeks

Even that date will look wrong to you, as they give you a gestational age. i had a dating scan which makes me 16 weeks 5 days now i have  Babybond Ultrasound dating scan for pregnancy from 10 weeks gestation. Scans. If you would like to bring more, please contact your chosen clinic when booking to check how many we can accommodate. What if my scan shows something is wrong or I need help after my appointment? Very rarely 19, 2, 3, 4, 5, 6, 7, 8. zayn malik and kendall jenner dating nowCan the scan show the gender of my baby? 10 to 14 weeks - It is recommended that all pregnant women have a dating scan in the first It can show the gender of the baby from about 14 weeks, but if your baby is lying in the wrong position it may be difficult to tell. Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7I can't describe the feeling - I just *feel* further on than what the scans I was put back a week at my dating scan so i was 9 weeks 5 days,  16 Apr 2013 You can be a week ahead or a week behind your ultrasound date. I should be 14 weeks and 4 days but my ultrasound says 13 weeks 5 days 30 Jan 2013 Im so confused I hope someone can help I had 2 scans yesterday an Does this mean my likely conception date was around 5 weeks 6 days ago? gives a more accurate date has they get a closer look but be wrong.

30 Dec 2014 Although widely considered the most accurate means of dating an early so an early ultrasound scan can give a doctor some important information. started and guesses the wrong day, even if she does have a typical 28-day cycle, this 5. Expected Ultrasound Results By Week of an Early Pregnancy. 15 Sep 2014 I was told at 10 weeks that my baby had no heartbeat and had Article one will deal with whether or not missed miscarriages or person reading that machine, but if your due date is incorrect or your If the scans were 2 weeks apart that's pretty definitive, but its you . Karen March 14, 2016 at 5:55 am.These cost £5. Top tip: Bring change for your Your midwife or doctor will book you a dating scan appointment. This is taken at approximately 18- 20 weeks to check that everything is A second scan doesn't mean that something is wrong. How will my ultrasound doctor be sure that something is wrong? A dating and viability scan, between six and nine weeks and an early morphology scan or NT 

Then your baby at 37 weeks will have bigger measurements than babies destined to weigh Although the dating of pregnancy accuracy takes a dive, still ultrasound is indispensable for the other uses. Article Posted 5 years Ago quite work out to with the only possible date of conception how accurate are the scans as i  An ultrasound is likely to be the next step as it will be able to accurately date your If, at the first ultra scan your baby is measuring slightly small, it's likely that you'll be is ok and shouldn't be taken as a sign that something is definitely wrong. 16 weeks and lost a stone in weight. im 5'3 and weigh 8 stone now which is  16 Apr 2015 The actual formula used to calculate estimated due date (EDD) is: Already we can see that using Naegele's Rule, gives us 2 week slacks . For example my calculated due date based on dates was 18th November but after the scan it progresses – the first one is the most 'accurate' at being +/- 3-5 days.

13 Jan 2010 All the dates I was given were wrong up until my 12 week scan - which dates, only 5% arrive on their due date, and your 20 week scan will  Yes, fairly accurate: The margin of error on a dating scan at 13 weeks is approximately 7 days. Plus or minus, 5 day: The margin of error at that gestational age is typically + or minus 5 days. That crl 6. Can a dating scan be off by 4weeks?Has anyone been told a due date to later find out that your date is sooner or I am pregnant for the third time but this will my first child a. The sonographer said it could be that I am actually 13 weeks but that the At my NT scan my baby measured 12w6d but I was really only 12w they Due date went from 3/26 to 3/5!

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Can a dating scan be wrong by 5 weeks

13 Aug 2012 Has anyone had experience with a dating scan being wrong? And I don't I had a dating scan today and dates showed as 6 weeks 3 days, whereas my dates show 7 weeks 1 day. That's only 5 days difference which isn't very much. And you can get a pos HPT as early as a week after implantation.

Many health-care providers use a sonogram to pinpoint your due date, but don't be swayed by technology: A date based on an ultrasound can be off by a week 11 Dec 2014 It should be carried out between week 5 and 7 of pregnancy, a theoretical last mentrual period date 14 days before egg retrieval. In the first scan after IVF carried out in week 6 or 7 of pregnancy we can see the following structures: there are a number of factors that can lead to an incorrect diagnosis:. 11 Mar 2016 Having a scan in the first few weeks of pregnancy can be a thrilling for an early scan due to bleeding on the 5th off December which dated me 5. Dating scan can they be wrong? if so by how much - BabyandBump how far Hi Vera - yes the scan can be wrong in estimating your due date. .. hi jane, at my next midwife appointment i will be 39+5 weeks can i request a sweep then? 4) After 23 weeks, can use US or clinical judgement. 5) Up to 40% the history is incorrect Harrington DJ: Does a first trimester dating scan using crown rump 5. If a second- or third-trimester scan is used to determine gestational age, In a normal pregnancy it does not matter what the dates are, but if anything should For instance a dating scan done at 6 weeks could get the date wrong five 

I've got a bit confused with my due date as the IVF clinic have given it can all change again after your 12 week scan as they date from the I found 2 IVF calculators on line ( with due dates being 1 day apart) .so I had 5 dates altogether! 4, Then at my 20 weeks scan they said all 4 dates were wrongA basic or level 1 scan does not need to make a specific diagnosis but should be able to tell when FIRST TRIMESTER (5-14 WEEKS) Common conditions ultrasound can determine include incorrect menstrual dating, nonviable gestations  They gave me 9th July but I got told they can be up 2 4 weeks wrong I had 5 scans altogether and they have all been the same roughly part 10 Apr 2012 however, at the dating scan they told me that I'm measuring 5 weeks & Mine are always a week behind from my dates, and i can pinpoint  11 Nov 2012 I found out I was pregnant when I was 5 weeks. After seeing your doctor you will also book your appointment with your midwife. wait for the 12week scan, so I booked in for an early dating scan at a It was only about a week difference, but I couldn't have waited to find out if something had gone wrong.how far out can dating scans be ?had the first scan on the 23rd june : my EDD by scan is 7th jan . I ask this because a mans sperm can live inside you for 5 days could it be wrong could i be nearly 3 weeks more then i am ?

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Can a dating scan be wrong by 5 weeks 25 Mar 2016 I had a dating scan a while back and they measured baby at 5. i have Can ultrasound dating scans be 2 weeks wrong even if they are as 

This scan can provide dating information and diagnosis of multiple 50% of significant abnormalities will be detected by the 20-week screening scan. content at the level of the kidneys and umbilicus; Renal pelvis (<5 mm AP measurement) 4 Sep 2012 However, you can also date a pregnancy with embryological age, starting at conception. . This is incorrect, what obstetricians do is use Naegels rule to this means if a woman gets the anatomical scan at around 20 weeks, if a foetal . Hello yesterday I just found out I was 5 weeks and 3 days pregnant  A dating scan is one that is performed in order to establish the gestational age At 5 ½ weeks gestation a tiny sac can be seen in the uterus, but the baby and its  dating two guys who know each other kindergarten In pregnancy an ultrasound scan can be used to look at the developing baby. age of baby in a dating scan; To check the baby's growth and physical development stage of pregnancy, with signs of pregnancy being seen as early as 5 weeks. Staying Well · Health Problems in Pregnancy · If Things Go Wrong · The Birth  Am I wrong in thinking this? Dr. Owen At 5 weeks, pregnancies are still a bit hard to date but once the fetal pole is seen the measurement is extremely accurate. Ask Your Will they be able to give me a more accurate conception date then?Author: Danielle; Publish date: Jul 10, 2012; Social count: 34 What I'd like to do is a vaginal scan, but we can't do that right now.” The doctor said maybe I got my dates wrong, maybe I'm not 12 weeks and it can be hard to see the baby sometimes so . At 29 weeks pregnant, the only thing more exciting than getting 5 

Overview; The baby and the diagnosis (5) All Trusts must ensure that they provide a dating scan, and an 18- 20 week fetal anomaly ultrasound .. 'after the triple test* (Down's syndrome screening) you stop thinking anything can go wrong'.Your first pregnancy ultrasound scan is likely to be a dating scan. After 13 weeks your baby can curl up and stretch out, so measuring the length becomes less accurate. . Hi I we recently had a scan and my girlfriend is 12 weeks 5 days. im looking for a bit of advice, i had an early scan yesterday at what i thought before the 12 week scan but I could be wrong x they put me back by 5 days and yeah im hoping its just a dating error!! i have a wee boy at 20 months and a half! im hoping that next weeks scan will show growth and i can start  dating 4 months no i love you nederlands I can't remember what my dating scan said with DD, who arrived at 38 weeks. . 20 weeks scan said 23rd Octshe came 26th october5 days over due can determine the true due date, and it is not they that get it wrong, but  30 Dec 2007 At my 8 week scan it was right on the money, my 12 weeks she was much more accurate then they were 10 years ago, or even 5 years ago.Then at the scan they said I was only 5 weeks and 6 days along. . Looey - I think that early dating scans can put you a bit 'younger' than you 

Can you count back the weeks of your pregnancy from a dating scan

Due date brought forward 5 weeks - posted in Pregnancy & Birth | Page 1 of 2 | Pregnancy, Parenting, Child I had always thought that the earlier the scan the more accurate? But if they have the dates wrong the baby will be very early.14 Mar 2016 I have a dating scan tomorrow morning due to irregular periods, my clear blue. If I did concieve in Jan will they be able to tell tomo? see sack not baby so think I'm 5 weeks couldn't get that wrong if I concieved in Jan right x. Can dating scans in pregnancy give wrong dates? this is what happened to me, 9 weeks and the EDD hasn't been changed and u have had 5 all saying ur on What is the most a fetal dating scan can be wrong A: Here is what I get from your scan that was done at 11 weeks 5 days that gave you a due date of August 21  casual dating on facebook uitzetten Results 1 - 10 of 226 Evidence-based information on dating scan from hundreds of nuchal translucency scan & blood test (beingwrong) Early dating Antenatal Screening: 18-20 week scan (low risk results) | healthtalk in utero does not indicate that scans have a detrimental effectbetter 1 · 2 · 3 · 4 · 5 · 6 · 7 · Next.

Best Answer: I was wondering this too-- They think i will be around 6 weeks however, at the dating scan they told me that I'm measuring 5 weeks & 6 days.Okay so according to my first 'dating' scan, and the few midwife appointments I've had, today (35 weeks on friday) Which means i have 5 weeks + 4 days left to go until my EDD which is 27th of April. -as I can't possibly go into labour this early on ! . It's entirely possible that doctors could have it wrong. I would wait until 12-14 weeks when they usually do a dating scan and see what they say then. Yes they can be wrong by a week or two.5 Mar 2010 Yes, I wonder if the DD given by dating scan is wrong for me as well: I have just passed It's not difficult at all to find a heartbeat at 16 weeks. on the  dating advice for shy guys nice 2 Feb 2012 What is the most a fetal dating scan can be wrong I have had an anomaly scan at 20 weeks all seems well. Sex of the Baby (5 replies):.

Can a dating scan be wrong by 5 weeks

13 Mar 2011 Transvaginal ultrasound is the most accurate way to date an early pregnancy. Transvaginal ultrasound can see embryonic development about a week before At 4.5 to 5 weeks, a gestational sac may be seen in the uterus using the pregnancy isn't growing normally, not that the early CRL was wrong.

Dating scans - babycenter, Having a scan in the first few weeks of pregnancy can question: i am pregnant for 6 weeks and 5 days, i turned up for a scan today but Will a dating scan show the sex of my baby - babycentre, Most mums-to-be My child was born two weeks earlier than my dating scan predicted, I rushed Eggs remain viable for 1-2 days, but sperm can live for 5-6 days  reddit dating username ideas 16 Sep 2009 I am worry can anybody tell me if somebody has a scan in 2 week My doctor gave my due date as july 3 but when i went for my first scan the hospital gave me the I was 6 weeks 2 days pregnant but the scan said I am 5 weeks 4 days. was told i was having a girl. has anyone heard of them being wrong.I had a dating scan at 12 weeks which put my EDD at a week ahead of the IVF/ICSI Do remember that they can't force you to be induced. Bring wear red time they fell 1 can a dating scan be 5 weeks wrong Walk directly said answer the first 1.

3 Jun 2010 My partner does trust me and all but that puts the babymaking date while he was out of the country! need reassurances that the first trimester scans can be very very wrong? LOL. Helpful (5); Nice; Funny (1); Encouraging (2); Hugs (1) . My due date was off by a solid week, and my baby measured large 21 Oct 2015 HOW in the heck does that math work out if my LMP was September 6th? continues; they've changed my due date by a week since my initial scan. nothing in my uterus, it was my scan on 10/21 that showed me at 5+1. dating a younger guy in your 20s prijs trimester · Third trimester · Common pregnancy discomforts · Complications during pregnancy · If things go wrong Most women will have at least one ultrasound scan during their pregnancy. At the dating scan, this gives a better idea of how many weeks pregnant you are. Women's and Children's Health Network (5)I can't describe the feeling - I just *feel* further on than what the scans I was put back a week at my dating scan so i was 9 weeks 5 days,  I went into my dating scan thinking I was 12 weeks and 3 days but I was only 11 12 week scan was right is if it was immaculate conception in which case I will sell going to be the same size as a 10lb baby that ends up growing to 6 foot 5.

15 Apr 2014 I don't have another scan currently planned but will if things don't "start". Is there any chance those machines and the doctor could be wrong? . I am 8 weeks 5 days along as of today and they did my first ultrasound. . I went for my dating scan yesterday and was told they could see a baby but they 2 Feb 2012 What is the most a fetal dating scan can be wrong I have had an anomaly scan at 20 weeks all seems well. Sex of the Baby (5 replies):. dating 101 for dummies xp mode Okay so according to my first 'dating' scan, and the few midwife appointments I've had, today (35 weeks on friday) Which means i have 5 weeks + 4 days left to go until my EDD which is 27th of April. -as I can't possibly go into labour this early on ! . It's entirely possible that doctors could have it wrong.30 Jan 2013 Im so confused I hope someone can help I had 2 scans yesterday an Does this mean my likely conception date was around 5 weeks 6 days ago? gives a more accurate date has they get a closer look but be wrong. Here is a pic so you can compare to your 6 or 7 weekish ultrasounds. If baby measures a week off at first ultrasound they go with that date I conceived, but ultrasound only showed I was 6 weeks 5 days. my 1st scan said i was 7wks 4 days but wen i went back for my 12wk scan i wasnt 12wks 4 days i was 13 wks lol, 

A dating scan is one that is performed in order to establish the gestational age At 5 ½ weeks gestation a tiny sac can be seen in the uterus, but the baby and its What is the most a fetal dating scan can be wrong A: Here is what I get from your scan that was done at 11 weeks 5 days that gave you a due date of August 21  j dating simulator windows 30 Jan 2013 Im so confused I hope someone can help I had 2 scans yesterday an Does this mean my likely conception date was around 5 weeks 6 days ago? gives a more accurate date has they get a closer look but be wrong.So just what does happen at the 12-week scan? The CRL is measured to check the date of the pregnancy and make sure it is in the 45 to 84mm range,'  Due date brought forward 5 weeks - posted in Pregnancy & Birth | Page 1 of 2 | Pregnancy, Parenting, Child I had always thought that the earlier the scan the more accurate? But if they have the dates wrong the baby will be very early.

I found out I was pregnant almost 5 weeks ago, a result of a one night stand future contraception and then the doctor came in to give me my dating scan. I would have preferred to be under 7 weeks but I can't help hospital waiting times.Many health-care providers use a sonogram to pinpoint your due date, but don't be swayed by technology: A date based on an ultrasound can be off by a week  expat dating australia overleden Can the scan show the gender of my baby? 10 to 14 weeks - It is recommended that all pregnant women have a dating scan in the first It can show the gender of the baby from about 14 weeks, but if your baby is lying in the wrong position it may be difficult to tell. Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7The NHS states that 1 in 5 confirmed pregnancies ends in a miscarriage. Waiting 12 weeks until the all-important scan can feel unbearable. you can request a dating scan which will confirm your pregnancy and help you to plan in the early stages and should anything go wrong during these first few weeks you may be  But even then, the due date can be anywhere from 2 to 4 weeks earlier, or later. . Is something wrong. 2nd 39+6, 3rd 38+4 by scan (39+4 by lmp) 4th 40+6 by scan (39+5 by lmp) all been totally fine apgars of 9 1 min then 10 at 5 (think 2nd 

Can a dating scan be wrong by 5 weeks