I am 25 weeks pregnant and my baby's femur measures 12 days behind. It was 10 days behind 3 weeks ago. There is growth but still not catching up to gestational age. Amnio showed bo Down S and all genetic tests are normal. I was exposed to 400mcg misoprostol at 8 weeks and 1 day. Couls this be a consequence of Misoprostol? Should I be worried about dwarfism? Are there other causes to short femur length?