had a growth scan yesterday where I was told that the femur was a little short, at 20 weeks all was well and within the percentile range. There has been growth but now he is on the bottom of the percentile range. The consultant said I shouldn't worry as head and abdominal has grown and are over the 50%tile, she said if she was measuring she would not measure the femur and this is a new thing for birth prediction calculations.. I have fibriods so not much space. She said I could request more tests if I was worried, should I?