In your ultrasound the head circumference and abdominal diameter were the same length but the femur lenght was smaller which is more accurate?
I have had many conflicting ultrasounds. I had the exact
opposite problem- the femur length was a week further in gestation
than the head or abdomen, and the estimated weight put her a week
further along than her femur. What my ultrasound technician told me
was to trust in the initial date given by the obgyn when I had my
very first ultrasound (I was only 5 weeks at my first appt). The
earlier the scan, the less the variation in size. I am 5'1, but
with those long legs, I guess our little girl is going to be 6'5
like her daddy!