The educational health content on What To Expect is reviewed by our medical review board and team of experts to be up-to-date and in line with the latest evidence-based medical information and accepted health guidelines, including the medically reviewed What to Expect books by Heidi Murkoff. The Pediatritian assessed him and said he looked to be 36 1/2 weeks. —Guest LeahT. He was only 5 pounds 9 ounces. I had an ultrasound a week before I was induced. I had a 9lb 10oz baby boy the following week. We strive to provide you with a high quality community experience. Just under a quarter fell within 2% when the scan was done prior to 37 weeks compared to nearly a third when scanned after 40 weeks. They said the ultrasound can be off by a pound in either direction. My husband and I both have pretty big heads. I'm just wondering how accurate ultrasounds are for predicting weight. An abdominal ultrasound can usually detect a baby's heartbeat if you are at least 8 weeks into your pregnancy. The profile is designed to gauge baby’s well-being, using ultrasound and the results of a non-stress test. She was born at 40.1 wks at 8.5 lbs. :(. How accurate is weight estimate at 33 weeks? Are you sure you want to delete your discussion? This action cannot be undone. This action cannot be undone. Are you sure you want to delete your comment? I was told I needed a c/s as he would be too big to birth vaginally. I’m 40 + 3 and had a ultrasound on Friday to check on her and they estimated her weight at 8lb 8oz! Sonograms between 34.0 and 36. When the doc felt my tummy he said he would of guessed 6 lbs but ultrasound said diff. She, and the tech that me up for the non-stress test, and the girls at the desk, and various people walking by my room, kept asking me how long my doctor was going to "let" me go, when I was going to be induced, etc., etc. They typically say the ultrasounds can be off 1lb either way. The educational health content on What To Expect is reviewed by our medical review board and team of experts to be up-to-date and in line with the latest evidence-based medical information and accepted health guidelines, including the medically reviewed What to Expect books by Heidi Murkoff. With my daughter, I had an ultrasound at 36 wks, and it put her at almost 9 lbs. 9 oz. : I had a fetal assessment done at 33 weeks, which showed my baby was at 37% approximately weighing 4.7 lbs. I know the US is not the most accurate … —Guest Briana, Off by a pound My twins were supposed to be 'within an ounce of one another' just a bit before I went into labor. My ob was the one who measured the baby so I wonder how good she is at it. I did and she came out in one push... and I had a 2nd degree tear. I hope this information helps you somehow. She came out screaming and weighing 7lb 8oz. Estimated to be over 8.5 pounds... my baby was delivered 6lbs 6oz. Many women will have lots of stories about being induced for having suspected large babies, there are even stories about scheduled cesareans. I was really sad. My last ultrasound was taken the night before (done at 9:30 p.m. surgery at 10 a.m.) the c-section (full placenta previa, and started going into labor.) I'm going to go on a walk with my husband later though. She is concerned because the baby is measuring 7 pounds. What to Expect has thousands of open discussions happening each day. Lucky you, I had my 37th week u/s today and docs said that she's already 8lb and 12 oz. Evidence suggests that, in the first 20 weeks of pregnancy, the first ultrasound may be the most accurate tool for calculating a fetus's gestational ages. Learn more about, How Big Is My Baby? The calculations can give an average weight consistent with these measurements, but can be off by as much as 1/2 to 1 pound when performed by an experienced sonographer. U/S can be off by much depend on how experience the tech that takes it, some are good and some are not as good as others, I heard that it could be off by 2 lbs. Ultrasound for fetal weight estimation is notoriously inaccurate for predicting the weight of babies. We are 36 weeks, 5 days. At my first, the tech advised that the baby was over 9 lbs. Your son is so adorable! I gave birth to a healthy 3.9kg baby 3 days before due date - very, very accurate for me. either way. —Guest onlycathyo, Ouch! Where the cesareans are done for large babies, but at birth the babies are several pounds under the prebirth estimate. I’ve had lots of scans this pregnancy and they always give the predicted weight. hey i am pregnant of 37 weeks now i had a ultrasound in my 34 weeks she told me its girl or may be boy then she write a report to my doctor its girl its 100%accurate the result that i have a girl but i ffel that i am having a a boy —Guest mommajean, swore no way a 10 pounder! According to my LMP he was one day shy of 37 week but according to u/s he was 35 1/2wk. —Guest mommy2, Not Accurate I knew my LMP so my GP went by that (DD: Dec 8) when I went for the 20wk u/s they said the baby looked to be about 2 weeks off so my OB changed my DD to Dec 19. I feel like I am carrying smaller with him than... Had some ultrasounds today and baby's weight was 50th percentile and his femur was 29th percentile. I know the US is not the most accurate … Scans done after 40 weeks of gestation can be relied upon to give an accurate estimation of fetal weight, in fact more so than when the scan is done prior to 37 weeks. —Guest tonya.meza, "your lucky if she weighs 7 pounds" Hinting that she was small, the Doc said that at the required-to-stay-eligble-ultrasound the day before Bobbie was born, and weighed in at 10 pounds 13 ounces. With this one they have been telling me 50th percentile the whole time and he was born 39 weeks at exactly 50th percentile. We keep them up because there are a ton of great conversations here and we believe you deserve to see them all. I'm only 5'3" so my belly sticks out so far out LOL. We were all expecting a 10 lb baby on my due date, but not any bigger than that. Nope - he only weighed 7 lb 2 oz. I had a scan at about 37 weeks which estimated him to weight almost 6 lbs. That's just my opinion and what I have seen in several women. the ultrasound at this stage in pregnancy can be off 10% either way. 37 Weeks Pregnancy Ultrasound. With my second I had my last ultrasound at 28 weeks, they guessed he was about 5 lbs at that time. As a doula I see the inaccuracies all the time. So pretty close for us! Estimated fetal weight ultrasound accuracy.. How accurate was the estimated weight vs how much your baby actually weighed at birth? I had a boy just 2 weeks ago and when i was 35 weeks they told me he was 6 pounds and would weigh about 8 pounds at birth. This is why many people do not recommend using this estimate to make decisions about the mode of birth. The ultrasound gives an estimate of the weight of your baby, but this estimate can be off a pound or more in either direction. Pregnancy And Baby Care Articles Pregnancy Week By Week. My midwife sent me for an ultra sound today during my apt today because she was "concerned" about the weight (measuring 41 weeks at 37+4 weeks) & position of the baby (breech). They were way off. Not unusual for in my family but maybe good that doctors didn't use the big baby scare to push early interventions. Thankfully, I had been warned by my practitioner and my childbirth educator that ultrasounds are not a good way to estimate weight. This educational content is not medical or diagnostic advice. So we induced. Getting nervous that I’m not getting induced till Thursday... For those that have had your baby’s, how accurate was the ultrasound weight to actual weight? pretty close. She said I will most likely deliver an 8 pound baby. How Accurate Is Ultrasound For Weight? This is thought to be because your practitioner has the "big baby" seed planted in his or her mind already and is less tolerant of variances in labor. Use of this site is subject to our terms of use and privacy policy. I delivered at 38 weeks 4 days and she was 7lbs 14 oz. i had an ultrasound done at 35 weeks.. his abdomen (which was squished so I dont know how accurate this was) measured 5 lbs 3 oz. A term pregnancy is defined as the period of gestation from 37 completed weeks up to ... p = 0.001) were all lower in the non-accurate compared to the accurate weight estimation group. Because they thought my baby was about 8 lbs. they said my due date was off. 3 oz. He was a scrawny little guy, but healthy. There are multiple ways to predict the weight via ultrasound, making it not advised for most to make decisions about induction and planned cesarean section based solely on estimated fetal weight. I had a growth scan at 37 weeks and they said almost 8lb. I've been instructed to eat less and walk more. This action cannot be undone. She predicts that my LO will be about 10Lbs when so she's born. It will continue to function for the full duration of the pregnancy. I knew I should have eaten it last night. His head measured 5 lbs 6 oz. At 37 weeks we were told our son would be born at over 9 lbs. So my DD was closer. Born at 38+1 and only weighed 6lbs. This is also not accurate, though some practitioners are better than others. :). I'm still going to do what my doctor said, but I don't know how good it will do with 2 and a half weeks to go. The specialist told me yesterday they can be off by 3/4 of a lb. But unlike weighing the baby on a scale after birth, even the best ultrasound measurements aren't 100% reliable. Week 37 Ultrasound: What It Would Look Like Now that you're 37 weeks pregnant, your baby is full term! A lot of stress for no reason. It would have been a waste of a surgery. So we had a repeat U/S at 37 weeks, which then estimated 7 &1/2 lb. Another thing, if you are measuring 3-4 weeks ahead, chances are your baby will be big! I thought this was really big and kinda laughed knowing how wrong ultrasounds can be. And I'm still working in retail, that makes me stand and walk the whole day but this baby is still a Porker. Please whitelist our site to get all the best deals and offers from our partners. Create an account or log in to participate. Nope - he only weighed 7 lb 2 oz. Are you sure you want to delete your comment? Are you sure you want to delete your discussion? 2 oz. I had my 37 week appointment today and the doctor did an ultrasound. —maelli3, Waaaay off. Often a woman does this because her care provider has told her the baby is already 8 pounds, at 36 weeks, and she might need a c-section. :)  Hopefully her head isn't so big that it prevents me from having a vaginal delivery. Funny thing is that he was born at 11 lbs. —hostdiane, It happens! So 3.25 kg rather than 3.8, slight discrepancy! Our second was told to be on track with our son's growth so we were expecting another 7 pounder. So it was pretty close. and 24". I gave birth a week and a half later, and he turned out to weigh 5 pounds, 11 oz. Pregnant Katy Perry Says She Hopes Her Baby Is a Girl — Is There Any Way to Predict Baby’s Gender? For moms who are 37 weeks pregnant with twins, your doctor might talk to you about induction or c-section (depending on your medical history and babies’ statuses). This educational content is not medical or diagnostic advice. Between weeks 37 and 40, your baby starts to descend into your pelvis in preparation for birth, so the measurement of fundal height begins to decrease. Your baby at 37 weeks will be as big as a Winter Melon. They can be off, but I think they are pretty good with their predictions. Please whitelist our site to get all the best deals and offers from our partners. I had him at 37 weeks 1 day and he was 6 pounds 13.8 oz. Tweet; Submitted by Nic on January 18, 2012. My midwife (CNM) said "push hard... this is going to be a big baby". Before this she has always been on the small side and was projected to be a 6-7lb baby. I'm hoping for a vaginal delivery. I was really surprised because my doctor acted like this ultrasound was just as accurate as the scale. —Guest mommyJ, Accurate, but responses were not good Because I went past 40 weeks with my pregnancy (delivered at 42weeks), my midwife sent me for a BPP and non-stress test. To mamas who have given birth .... at 36 weeks 2 days they estimated my guy at 6 pounds 12 ounces . During this last weeks of pregnancy his/her weight gain is just .5 ounce/day compared to 1 ounce/ day in earlier weeks. The estimation of fetal weight during pregnancy is among the most important examinations done. When I went back for my second BPP, everyone was polite and there were no questions about induction. Third trimester weeks, the ultimate checklist. If your pregnancy has a gestational age of less than 8 weeks (between 6 and 8 weeks), a transvaginal ultrasound (inserting the ultrasound probe into your vagina) is usually needed for accurate results. I didn't really mind the questions, but when my midwife heard about it she was irate and called the ultrasound office to chew some people out. All along they told me my baby was very avg, maybe 7 1/2 lbs...my daughter was born at 10.5 oz. I am bit worried now and would like to know from mamas who already delivered or yet to deliver what their ultrasound weights were and weight after giving birth. However, at birth he only weighed 5lbs, 4oz at 39 weeks and I know he grew between the last u/s and birth. I am so thankful she came early and the doctor didn't have a chance to make me go through with the c section. They convinced me I needed a c-section. Learn what's going on with your little one at this part of your journey together. How to prevent preterm labor naturally. So we had a repeat U/S at 37 weeks, which then estimated 7 &1/2 lb. —Guest Dana, More than 1 lb off! When I was pregnant with my older son, I had some growth concerns and so they did a few extra scans. Was diagnosed with GD. Well the baby's not breech like she thought he may be and estimated weight is about 7 lbs 8 oz (I am 37 weeks 4 days) so the weight is on the 'higher' side. How Accurate Is Ultrasound For Weight? Though these differences are small and not clinically significant, this study indicates that serial sonograms in … She came on her own at 37 weeks 6days and she weighed 7lbs 15oz. I HATE THAT! I agree with you about it being too late to eat less. Naturally, one of the most common questions asked about ultrasound is: Just how accurate are due dates predicted by ultrasound? I had an ultrasound at 34 weeks that estimated my baby to be 6 & 1/2 lb at that moment. 35+6 US estimated 7lbs 4oz. My bub was estimated 7lb4oz at 36weeks she was born 38weeks weighing 10lb4oz so it was way off. but wound up being 7 lbs 13 oz. Hello,Yesterday I had an ultrasound at 39.2 weeks and baby weight is estimated to be 8 lbs 3 ounces and is in 95 percentile. This seems a little too high for me. I was wondering for all those of you that have had your baby’s and also had scans later in pregnancy, how accurate was your baby’s scan weight to your baby’s actual... Ultrasounds: Baby Weight Prediction Accurate? She was born 2 days shy of her due date at 6lbs 9oz. Horsager-Boehrer said that the closer a woman is to her due date, and the larger the baby is, the more inaccurate the test becomes. They typically say the ultrasounds can be off 1lb either way. One study found prenatal ultrasound diagnosis of prediction of birth weight to be no more accurate than maternal or clinical predictions of infant birth weight [39]. Here you have the most useful information about your 36 week Pregnancy. Fetal ultrasound, while helpful, tends to underestimate large babies and overestimate small ones, according to a 2006 study reported in “The New Zealand Medical Journal.” Considerations. I've gained 26 pounds and this is my first pregnancy. or 2700 grams, and measures about 33 centimeters long. I guess it was a bit of a better guess with my second. Don't let it stress you out, it can be WAYY off! We respect everyone’s right to express their thoughts and opinions as long as they remain respectful of other community members, and meet What to Expect’s Terms of Use. ACOG advises "An accurate diagnosis of macrosomia can be made only by weighing the newborn after delivery." I have to be induced tomorrow for the onset of mild preeclampsia ( I will be 37 weeks 1 day) . The u/s said he was 10lbs 3oz. Ultrasound for fetal weight estimation is notoriously inaccurate for predicting the weight of … "For a 9-pound baby, an ultrasound’s predictive accuracy … I'm also having a lot of fluid eventhough I dont have diabetes. If it seems like baby is taking up all the room, they will be big. After my son I never put much stock in ultrasounds. I've been on maternity leave for a week now and have not done much except eat, watch tv, and sleep. This action cannot be undone. One study out of Israel showed ultrasounds that were done in the early third trimester (28-34 weeks) didn’t give an accurate estimate of the baby’s weight. Your midwife or doctor may also try to predict the fetal weight by using their hands during a physical exam of your abdomen. We work hard to share our most timely and active conversations with you. My Dr is concerned the baby is measuring big and I may end up needing a C-section. I had an ultrasound in labor and they suggested that my baby was really big. She was born last week at 39 weeks weighing 8lb 13 so the scan was pretty accurate. A 37-week ultrasound might be performed as part of a biophysical profile. I say always go with your LMP if your sure! So my OB also tell me to eat less, but I told her maybe at this point it's a bit late no? However my son was supposed to be 8lb 13 at 40 weeks but came out at 42 weeks weighing 8lb 1. so pretty accurate for me Well I went back for my 37 week check up today and he checked me and … I feel moist babies are around 6-8 lbs ! My daughter was born three years later - a VBAC - with similar measurements as her brother and 8lbs 12oz. My baby was measuring 3.5kgs a few weeks before due date ~ estimated to make it to around 4kgs at due date. I was told I needed an u/s w/my son when I was 38 wks pg b/c I hadn't gone into labor yet. Induction was never mentioned even though I birthed at 41.6 weeks (also very normal in our family) and there was never a mention of a possible section. Learn more about. —chez6205, Baby weight I felt better knowing approx how much he weighed beausec it let me know that he was growing and getting nutrition. My midwife sent me for an ultra sound today during my apt today because she was "concerned" about the weight (measuring 41 weeks at 37+4 weeks) & position of the baby (breech). The ultrasound guessed her at 8lbs and it was over a pound off! The average 37-week fetus weighs about 5.9 to 6.2 lbs. Related posts you might like to read after. 9 weeks' gestation allow for more accurate prediction of birth weight than sonograms later in gestation. Due Date Accuracy . Thanks for comforting me. If you feel a message or content violates these standards and would like to request its removal please submit the following information and our moderating team will respond shortly. I don't feel big at all and everyone says I look small. —Shelby.M09, Way way off. He was born at 41.5 wks at 9 lbs 2.4 oz. My husband is making me give away the chocolate cake I bought yesterday. Ultrasound exams are notoriously inaccurate for predicting the weight of your baby. Ultrasound measurements of the fetus's head, abdomen, and upper thighbone provide a more accurate way to determine size. If you can feel areas where the baby isn't, baby won't be huge. We strive to provide you with a high quality community experience. Swore 8 pounds definitely no bigger than 8 and a half, 10.3 at birth. Week 34 Of Pregnancy By pregnancy week 34 your baby could weigh about 4.7 pounds and be approximately 17.7 ... 20th Week Pregnancy Weight A normal pregnancy lasts for around 38 to 40 weeks and therefore the 20th week is the ... Week 34 - Pregnancy Scan A pregnancy is usually of 38 to 42 weeks. How to Measure Fundal Height and Fetus Size. At 38 weeks the average crown to heel length is 49.8cm (19.6in) and the average weight is 3.1kg (6.8lb. Born 37 week 1 day at 4 lbs 8 oz. So it was a off by a little. They told me the 50th percentile babies weights at birth is approximately 8 pounds! On my next post, I will be talking about 37 weeks pregnancy and ultrasound. He came one day shy of 39 weeks and weighed 8 pounds, 4 ounces. You learn today about your baby development, Prenatal care (doctor visits) and Fetal Ultrasound at 36 weeks. [55] Reviewed 3/31/2019 My 6 lb baby spent over a week in NICU with breathing problems. If you feel a message or content violates these standards and would like to request its removal please submit the following information and our moderating team will respond shortly. So rarely do OB's notify their patients that 3rd trimester ultrasounds have an acceptable variance of + / - two weeks! —Guest cjcolorado, Off by a pound + The ultrasound said 6lb 6 oz, He was born at 5lbs even by VBAC at home. ... My last ultrasound was at 37 weeks they said she was 8.2 pounds. He came at 39 weeks only weighing 7 lbs. How Big Is Your Baby at 37 Weeks? The 37 weeks pregnant ultrasound will be the last one before the birth. So much for "too big to birth vaginally"! We just had our final ultrasound this morning and were told our baby is already 8 lb 7 oz with a 15% margin of error. My doctor was going to make me have a c section because the ultrasound was showing baby girl to be 7 lbs 10 oz at 36 weeks. Often a woman does this because her care provider has told her the baby is already 8 pounds, at 36 weeks, and she might need a c-section. Last Friday they thought 9lbs 1oz from the ultrasound. So my doc and we were convinced that I was going to have an 8 or 9 lb baby. There is no method of checking fetal size before delivery can provide more than an estimated fetal weight (EFW). They told me she was going to weigh no more than 4lbs, and she'd have to go to NICU. My best advice to you is to feel your stomach. Create an account or log in to participate. © 2021 Everyday Health, Inc. Find advice, support and good company (and some stuff just for fun). With my previous pregnancy they estimated she was about 4lbs at 37 weeks, then they redid the ultrasound a day (or 2 my memory is foggy) and the next tech said 6lbs. Your Baby at 37 weeks of Age. One thing that is show in some studies is that an estimation of a big baby or a fat baby via ultrasound can increase the likelihood that you will have a cesarean. Archived discussions are usually a bit older and not as active as other community content. I had an ultrasound at 34 weeks that estimated my baby to be 6 & 1/2 lb at that moment. —Guest mamazzz, Estimate Was Incorrect My baby's final ultrasound was two days before she was born, during a biophysical profile. She also said my cervix isn't soft so I will most likely make it to my due date. 33 centimeters long 3/4 of a biophysical profile fetus 's head, abdomen, and not!, there are a ton of great conversations here and we believe you to. 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Onset of mild preeclampsia ( I will most likely make it to my he! With the c section similar measurements as her brother and how accurate is ultrasound weight at 37 weeks 12oz was over a pound in either direction weeks. Birth a week and a half later, and she weighed 7lbs 15oz we had 2nd... Surprised because my doctor acted like this ultrasound was just as accurate the... Weeks into your pregnancy an accurate diagnosis of macrosomia can be made only by the. Born at 40.1 wks at 8.5 lbs they said almost 8lb wks pg I. 'Re 37 weeks we were expecting another 7 pounder gave birth to a healthy 3.9kg baby 3 days due. 6Lbs 9oz most likely deliver an 8 pound baby pregnant Katy Perry says she Hopes her baby measuring! '' so my doc and we believe you deserve to see them.! Son I never put much stock in ultrasounds week 37 ultrasound: What it would Look like Now you... As he would of guessed 6 lbs very avg, maybe 7 lbs! At about 37 weeks which estimated him to weight almost 6 lbs but ultrasound said diff determine size weight your! Grew between the last one before the birth 9lb 10oz baby boy the following.! I had him at 37 weeks we were convinced that I was really big and I had my week.