My largeness 10at full term it can be +-- 2 pounds.. and ultrasound is the least accurate method, anyways, for determining fetal weight before delivery. If you want a closer guess...ask your...
CY deliver, the knowing VBAC, birth.
Well, one article I've been reading lately (here it is: says that u-s has a margin of error of +-- 1 week per trimester; so by the 3rd trimester, in dating the pregnancy the u-s can be off by +-- 6 weeks. Add onto that the fact that u-s can get a baby's weight wrong by a pound or two in either direction, AND the fact that u-s will "consistently overestimate the gestational age of larger than average fetuses," and you could very easily end up in a situation where you think the baby is larger than it is, or even readier to be born than it really is (oo! Awkward sentence!).
I forget - is there a factor at work here that will make you more likely to deliver early? If not, you're still most likely to go over 40 weeks. Also, the baby's size won't matter as much as position and proportions, ITO how hard or easy an unmedicated birth will be. Loads of women have large babies and relatively easy births, or very difficult births with little babies.
Melania Mom to Joffre (Jan 11, 2003) and #2 (edd May 21, 2005)
