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How much does a baby gain?

Ill be 30 weeks tomorrow and last Friday at my sono Gabriel was weighing 3lbs 2oz and I was just wondering if anyone knows how much on average a baby gains a week in the last 10 weeks I know he's big already just wondering how much bigger he could get. Thanks :-)

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jazzysmommy1004

Asked by jazzysmommy1004 at 12:15 PM on May. 27, 2009 in Pregnancy

Level 7 (167 Credits)
Answers (10)
  • 3 lbs 2 oz is only a estimate, he may be small or larger than that, a baby gains the most weight the last few weeks of gestation. The average baby weighs 7-8.5 lbs... Of course some are smaller around 6 lbs and larger, 9 lbs. As long as he is growing and you increase your poundage by 1-2 lbs the last 4 weeks, he will be fine. I cant say how much he gains each week, because that depends on alot of variations.
    midnightmoma

    Answer by midnightmoma at 12:22 PM on May. 27, 2009

  • I'm measuring 3 weeks ahead so I'm sure he's big. My daughter was 8lbs 10oz, she was a big baby. I know you can't say exactly how much he will gain but there has to be an average or how would they determine if a baby was big or small? Like I said I just need an estimate.
    jazzysmommy1004

    Answer by jazzysmommy1004 at 12:29 PM on May. 27, 2009

  • I think it's normally about half a pound a week during the last couple of months. So 10 weeks would be about 5 pounds, making the end weight about 8 lbs 2 oz. Doesn't sound too big to me. :-)
    DragonRiderMD

    Answer by DragonRiderMD at 12:48 PM on May. 27, 2009

  • Ok thanks. I was just wondering cause my dr and everyone says he's big so I didn't know.
    jazzysmommy1004

    Answer by jazzysmommy1004 at 12:55 PM on May. 27, 2009

  • Measuring ahead is normal if this is your second or third pregnancy...the average baby weighs about 2000 grams at 32 weeks, and end with the average being 3200+ grams at birth, 198 grams equals 7 ounces. Sorry LOL, my brain hurts to do the math, but there are websites you can go to that will do the conversion for you. Hope this helps more
    midnightmoma

    Answer by midnightmoma at 12:58 PM on May. 27, 2009

  • I've heard half a pound a week too.
    mybella81

    Answer by mybella81 at 1:05 PM on May. 27, 2009

  • I agree with the pp... no matter how great our technology is today, there is always a marginal error of 1-2 pounds when determining fetal weight. Measuring "ahead" doesn't always mean anything either. Fundal height also depends on amniotic fluid levels, maternal height and shape, abdominal muscles...etc. If you want to guess just for fun... ;) tac on about 5lbs (1/2 pound a weeks) for your remaining 10 weeks.
    Caramelturtle

    Answer by Caramelturtle at 1:42 PM on May. 27, 2009

  • Its a half of a pound a week but those u/s measurements are so far off its pathetic! I have NEVER heard of anybody being told their baby weighs what they really weigh! With my son I had an u/s done the week before he was born and they told me he was 6 lbs 10 oz... a week later he was born weighing in at a whopping 5 lbs 7 oz. two weeks before my daughter was born I had an ultrasound saying she was roughly 7 pounds but then 2 weeks later she was born weighing 6 lbs 7 oz. I dont trust those u/s at all!!
    Jaydin_Makenna

    Answer by Jaydin_Makenna at 2:25 PM on May. 27, 2009

  • At 28weeks they said he was 3lbs 2oz and got another ultrasound 2 1/2 weeks later and they said he was 4lbs 2oz. Now last week they did another ultrasound and said he was 5lbs 4oz. I'm 33 1/2weeks now and measuring more 3 weeks ahead and both my other kids were over 8lbs too. I've gotton more ultrasounds now cause of some spotting one day and then another .
    Anonymous

    Answer by Anonymous at 2:41 PM on May. 27, 2009

  • Thanks everyone. With my daughter they did an u/s at 37 weeks because they thought she was breech and they said she was 7lbs 14oz and then when she was born by c section 2 weeks later at 39 weeks she was 8lbs 10oz so mine was pretty dead on. That's why I figured this one was too. Guess ill just have to wait.
    jazzysmommy1004

    Answer by jazzysmommy1004 at 5:22 PM on May. 27, 2009

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