My daughter is currently in the last few weeks of her first pregnancy. Every doctor's appointment up till now has been normal and the baby was growing as expected. Yesterday she had another dr's appointment and when she came and told me about it she said that the doctor wants her to possibly see a specialist next week because she thought the baby's femur looked small. I've never heard of that and how can they tell that from an ultrasound? I told my daughter not to worry about it and it was probably just how she was laying. I'm not a tall guy and neither is my daughter's mom. Neither my family or my daughter's mom's family have any genetic abnormalities and neither does the baby's father's family. Is this something to be worried about?