How big is my baby?

Everyone asks you dont they! They want the obstetrician to tell you. If I was dishonest, I would tell you something like 7.5 to 8 pounds (the average weight) or look at your last

babies weight and make a guesstimate based on that.

Well, the truth is that as part of your care I am trying to detect those babies that are small due to placental insuffiency, and manage accordingly.

The actual birthweight estimation is fraught with error.

Please see this website for a detailed explanation as to why that is so.