If you are worried about about lack of movement I say insist on seeing a perinatologist for a more intensive ultra sound. I did not not feel my baby move very much. My regular ob said the same thing, everything looked fine, she was moving a lot I just was not feeling her. At my 30 week appointment my ob found I had way too much amniotic fluid but could not see anything wrong with the baby. She sent me to the perinatologist, there was a problem and I delivered my baby by emergency c-section at just under 31 weeks. My daughter died 1 hour and 15 min after she was born. It turns out she had a very rare disease called Pena-Shokeir syndrom. It is extremely rare and it is lethal. One the biggest indicator is lack of fetal movement. I don't want to scare you, but please be proactive! Although there is nothing they could have done for my baby, I still would have wanted to know.