Question about baby birth weight (btdt mamas)

10 posts / 0 new
Last post
moon7starr's picture
Joined: 08/18/08
Posts: 114
Question about baby birth weight (btdt mamas)

I know this is a question I should ask my dr. but, I won't see him again for about 2 more weeks so....I will ask you in the meantime:

DS1 was born 8lbs even. DS2 was 9lbs, 6 oz. I had a horrible thought last night about an 11 pounder this time around. (I know it's not unheard of to push out larger babies but, I couldn't help but wonder.) Does anyone know if there is a way to tell when the baby is "too big" to come out vaginally? Would the doctors anticipate a larger baby this time around and discuss the possibility of an early induction or would they wait and possibly do a c-section? Also, how can they tell how large it may or may not be? I don't remember my ob last time around being concerned about size at all but, when my son was born, he was very quiet which worried me. The nurse at the time said that sometimes the larger babies are "shell-shocked" after the birthing process.

Any kind of insight would be great! Thanks Mamas!

harmonybear's picture
Joined: 06/06/07
Posts: 639

They can't do more than estimate. From an ultrasound, you can get an idea of a baby's weight but nothing very exact. The estimate can be off by a pound or more, so it's not really very useful in determining the weight of the baby.

You're unlikely to have a baby much bigger than your previous babies. Maybe you'll get a 10 lb-er this time, but it's more likely you'll have another 9.6 lb baby - or lighter, if it's a girl.

I know this is just anecdotal, but a friend of mine has had four babies. The first was a girl, 7 lbs. The second was a 9-lb boy, the third was a 10-lb boy, and the fourth was a 9-lb boy. So in general your first baby is your lightest, but you don't usually keep having heavier and heavier babies. Smile

Joined: 02/17/12
Posts: 230

With my 4th they estimated her weight at 6-7lbs, and she came out at 8.5 lbs!

My baby's birth weights have jumped all over the place...My first, a boy, was 7 lb 4oz. #2, a girl was 6lbs 4oz, #3, another girl, was 6lbs 1oz, and #4, another girl, was 8lbs 8oz. All my babies were born naturally at 39-ish weeks. Both my 6lb babies were born in Denver, I was told that high altitude makes smaller babies. Seemed to be true for me, my bigger babies were born in Utah.

Kier's picture
Joined: 03/12/12
Posts: 1973

DS1 was 6lbs even. He had slowed down growing, so my Dr. induced me once he measured (by ultrasound) to be 6lbs... I was induced 10 days early and he was 6lbs on the dot. DS2 was born right at 36 week (water broke), He was 5lbs 8oz. With DD I was induced at 36 weeks and 5 days because of low amniotic fluid... she was 5lbs 5oz. The boys were both 18.5 inches, and DD was 18inches

I would definitly talk to your doc and just see what their protocol is. They can do ultrasounds to look at how well the baby's head is fitting into your pelvis at the end, and may even do xrays... depending on how they do things. Most docs wont induce before 38 weeks, unless medically necessary. Some wont do it till 39 or 40 weeks.

Just because you have had a bigger baby doesnt mean that you will again. A friend of mine, that has 6 kids, has delivered all sorts of sizes. Her biggest was 9ish lbs, and her baby right after that was only 7lbs some odd oz. The general rule for normal height, healthy women, is that your body wont make a baby bigger than it can get out.

moon7starr's picture
Joined: 08/18/08
Posts: 114

Thanks so much for the reassurance! You are all so right-I just realized it can't be rule of thumb that they always gain a pound w/ each subsequent birth...otherwise I bet Mrs. Duggar would've closed up shop 10 kids ago! Biggrin

alwayssmile's picture
Joined: 08/26/07
Posts: 14483

Honestly, I wouldn't give it a second thought. There are so many factors that goes into birthing a baby, not just weight. The vast majority of women will not grow a baby that is too big for them. Position s/he is in is WAY more important IMO than most other factors. If a woman struggled to give birth with an 8 pound baby it doesn't mean that baby was too big weight wise, but rather how was the baby positioned to come out (posterior babies can be problematic and many don't even know if their baby was like this sadly), if there was an arm up there, etc.
I also think the weight estimate u/s are really dumb. I will refuse to have them this time around. I was told I was having a 7 pound baby and had an 8.5 lb baby. In reverse a friend of mine was told she was having an 8.5 lb baby and ended up having a baby just under 7 lbs. What the heck was the point of the u/s then?!

sinkme's picture
Joined: 03/17/12
Posts: 59

You really never know. I had my first vaginally. She was 6lbs, 9oz and I got ripped apart (literally). So for me, I guess just about any size is too big. I am 5'2" but I've seen others my size have a larger baby just fine. I had a CS for my 2nd and will do a repeat this time.

And also- my first baby cried one time and then laid there looking around for the new few hours. Not a peep from her. She was so calm. My 2nd wouldn't stop screaming no matter what (and later she was diagnosed as colicky).

Kier's picture
Joined: 03/12/12
Posts: 1973

"alwayssmile" wrote:

Honestly, I wouldn't give it a second thought. There are so many factors that goes into birthing a baby, not just weight. The vast majority of women will not grow a baby that is too big for them. Position s/he is in is WAY more important IMO than most other factors. If a woman struggled to give birth with an 8 pound baby it doesn't mean that baby was too big weight wise, but rather how was the baby positioned to come out (posterior babies can be problematic and many don't even know if their baby was like this sadly), if there was an arm up there, etc.
I also think the weight estimate u/s are really dumb. I will refuse to have them this time around. I was told I was having a 7 pound baby and had an 8.5 lb baby. In reverse a friend of mine was told she was having an 8.5 lb baby and ended up having a baby just under 7 lbs. What the heck was the point of the u/s then?!

My 1st was sunny side up, with his head tilted, cord around his neck, having decells. He got stuck and had to be vacuumed out... got 2nd degree tares from that Sad He probably would have come earlier, on his own, had he not been in that position. He has always been my challenge Smile

My 2nd just knew what to do. He got into position, my water broke, my labor was easy, and I pushed him out in about 4 pushes... my dr. had just gowned up and the nurse hadnt even broken down the bed (thats a WHOLE other story) when I delivered him. He is my happy go lucky kid... shy, but was always a more content baby.

My 3rd was also sunny side up, with the cord around her neck. She turned on her own as she came out, but because of the cord the Dr. had to sit there with his fingers between the cord and her neck to keep it from getting too tight. It took only 15 min. to get her out, but she probably would have come out just was easily as DS2 if she had been facing the right way to begin with. She is right between the boys in temperament.

What I have found is that each baby, pregnancy, etc. are different, yet similar, in their own ways. I honestly have to say, that Delivery is one of my favorite parts of pregnancy. Its pain with a purpose... the end result being AMAZING. I also love that my body just knows what to do, and I do it. Yes, I didnt say that after my first. But after the 2nd two, it is so true.

-x-Amber-x-'s picture
Joined: 10/08/06
Posts: 642

I was 37 wks with my son and he weighed 6lbs 10oz, and I was 38 1/2 wks with my daughter and she was 5lbs 8oz, and that was after my doc estimated her to be over 7 lbs!

belindab's picture
Joined: 06/15/02
Posts: 1033

I don't put a whole lot of stock into weight est u/s. I know a girl who was told she needed a c-section because they est the baby to be 10 lbs. She did it and the baby was 7lbs 10oz. They can be off by a lb or more. My doc doesn't put much faith in them either. And babies don't always get bigger. My first was 9lbs 5 oz, my 2nd was 9 lbs 3 oz, 3rd was 8lbs 8oz, 4th was 8lbs 1oz and then my 5th was 9lbs 6oz. And even though my last was my biggest, he was also my easiest delivery. Episiotomy with #1 and tears with the next 3 but nothing with #5 Smile Like PP said, position means a lot.