I had an u/s done at 34 weeks, and it said both girls weighed the same- 4 lbs. 8 oz. I didn't have another growth scan before delivery. Sofia was 6 lbs. 1 oz. at birth and Maya was 4 lbs. 8 oz. What *I* think happened, but of course I have no proof, is that for some reason Maya stopped growing at 34 weeks. That may not be the case though because her umbilical cord was a LOT smaller than Sofia's. So either the u/s was off, or she stopped growing.