Re: Another U/S
I think the only thing that gets MORE inaccurate as you progress is the EDD, since they computer calculation on-screen is based on size.
In my first pregnancy they kept estimating size and said that my DD would be really big. At 36 weeks the doctor said he wanted to induce at 38 weeks because he thought she was going to be huge. I failed the induction and ended up doing a c-section (all this was due to complications due to large fibroids).
In the end, the baby was 7 lbs, 1 oz! How was the doctor so off? Well, she's TALL! So, when the femur measurements were taken and a weight calculated from that, it turned out to be wrong. My DD is in the 90% for height and 40-50% for weight. <shrug>