With my daughter, I had an ultrasound at 36 wks, and it put her at almost 9 lbs. Third trimester weeks, the ultimate checklist. So it was pretty close. 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. He came at 39 weeks only weighing 7 lbs. I know the US is not the most accurate … Doctor said everything looked good and was in a rush so I didn't ask her anything. Ultrasound was way off! Last Friday they thought 9lbs 1oz from the ultrasound. I had an ultrasound at 34 weeks that estimated my baby to be 6 & 1/2 lb at that moment. My best advice to you is to feel your stomach. He was only 5 pounds 9 ounces. They can be off, but I think they are pretty good with their predictions. I was really surprised because my doctor acted like this ultrasound was just as accurate as the scale. —chez6205, Baby weight I felt better knowing approx how much he weighed beausec it let me know that he was growing and getting nutrition. This action cannot be undone. —Guest LeahT. 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. or 2700 grams, and measures about 33 centimeters long. I did and she came out in one push... and I had a 2nd degree tear. We analysed a total of 2296 pregnancies where an ultrasound scan was performed within 3 days of delivery, including 606 preterm (<37 weeks) and 1690 term deliveries. This action cannot be undone. Your midwife or doctor may also try to predict the fetal weight by using their hands during a physical exam of your abdomen. 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. She came at 40w2d weighing 8 lbs. So my doc and we were convinced that I was going to have an 8 or 9 lb baby. 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. I had an ultrasound in labor and they suggested that my baby was really big. Create an account or log in to participate. My son was 9lbs even at birth. hi there! Learn more about, How Big Is My Baby? My 6 lb baby spent over a week in NICU with breathing problems. Did your doctor say if you are going to delivery vaginally or by c-section? However, at birth he only weighed 5lbs, 4oz at 39 weeks and I know he grew between the last u/s and birth. 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. Learn what's going on with your little one at this part of your journey together. A 37-week ultrasound might be performed as part of a biophysical profile. Conclusions. At birth, they were a full pound different. With it diet controlled baby was apparently following 75th percentile - baby was born on 6th & up over 90th. Good luck! Before this she has always been on the small side and was projected to be a 6-7lb baby. I had him at 37 weeks 1 day and he was 6 pounds 13.8 oz. Lucky you, I had my 37th week u/s today and docs said that she's already 8lb and 12 oz. Are you sure you want to delete your discussion? Nope - he only weighed 7 lb 2 oz. 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. Sonograms between 34.0 and 36. So my OB also tell me to eat less, but I told her maybe at this point it's a bit late no? To mamas who have given birth .... at 36 weeks 2 days they estimated my guy at 6 pounds 12 ounces . I was really sad. 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. Learn more about. How to prevent preterm labor naturally. Ultrasound exams are notoriously inaccurate for predicting the weight of your baby. How Big Is Your Baby at 37 Weeks? 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. As a doula I see the inaccuracies all the time. © 2021 Everyday Health, Inc. Estimated fetal weight ultrasound accuracy.. How accurate was the estimated weight vs how much your baby actually weighed at birth? :)  Hopefully her head isn't so big that it prevents me from having a vaginal delivery. I thought this was really big and kinda laughed knowing how wrong ultrasounds can be. 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. 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. —Guest onlycathyo, Ouch! The average 37-week fetus weighs about 5.9 to 6.2 lbs. Ultrasound for fetal weight estimation is notoriously inaccurate for predicting the weight of … Mine was very accurate, I got weight at 36 weeks … She said I will most likely deliver an 8 pound baby. However, u/s aren't completely accurate either. I'm going to go on a walk with my husband later though. So my doc and we were convinced that I was going to have an 8 or 9 lb baby. I've gained 26 pounds and this is my first pregnancy. They said the ultrasound can be off by a pound in either direction. The estimation of fetal weight during pregnancy is among the most important examinations done. —tanyago, Varied with my 2 kids With my son, I had an ultrasound at around 38 wks, and they said he weighed 8.5l bs. 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. This action cannot be undone. Please whitelist our site to get all the best deals and offers from our partners. [55] Reviewed 3/31/2019 And I'm still working in retail, that makes me stand and walk the whole day but this baby is still a Porker. 35+6 US estimated 7lbs 4oz. 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. She is concerned because the baby is measuring 7 pounds. Following changes are eminent in a baby at 37 weeks:-37 Weeks pregnant baby weight is nearly 2.85 kg or 6.3 pounds and he is 19 inches long. 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. 9 oz. Pregnant Katy Perry Says She Hopes Her Baby Is a Girl — Is There Any Way to Predict Baby’s Gender? —Guest mamazzz, Estimate Was Incorrect My baby's final ultrasound was two days before she was born, during a biophysical profile. 2 oz. I was told I needed a c/s as he would be too big to birth vaginally. I had a scan at about 37 weeks which estimated him to weight almost 6 lbs. We keep them up because there are a ton of great conversations here and we believe you deserve to see them all. Swore 8 pounds definitely no bigger than 8 and a half, 10.3 at birth. So it was a off by a little. His head is on the larger size, so that may have contributed to the over-estimation. I know the US is not the most accurate … So 3.25 kg rather than 3.8, slight discrepancy! My ob was the one who measured the baby so I wonder how good she is at it. Though these differences are small and not clinically significant, this study indicates that serial sonograms in … Archived discussions are usually a bit older and not as active as other community content. We work hard to share our most timely and active conversations with you. I'm hoping for a vaginal delivery. She was born 2 days shy of her due date at 6lbs 9oz. He was born at 41.5 wks at 9 lbs 2.4 oz. estimated 95th percentile at28wks. 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