How big is the baby?

Question

Is it normal that my baby jumped from 3.3lb (1.5kg) at week 29, to 5.15lb (2.34kg) at week 32? Just in 3 weeks? 
Putting in mind that he was always in the same range of the gestational age but now is a week or more over, his weight now matches 33weeks +

Answer

Yes, it’s normal. Most babies start to gain about half a pound every week starting around 30 weeks. My baby was estimated at 2 lb 14 oz at 28w4d and 4 lb 7 oz at 32w4d. Ultrasound measurements are just rough estimates anyway. Also if you have a different tech each time sometimes they tend to measure things slightly differently.
Most moms I know had babies that weighed less than estimated at birth, but sometimes it’s more. For example, I’ve heard of several women whose babies were estimated around 9 pounds a few days before birth but only ended up weighing about 8 pounds. My friend’s baby was estimated to be 7 lb 6 oz and was born 3 days later weighing 8 lb 3 oz. So you won’t know for sure until baby is born!

How big is the baby?

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