in my first 3 full term births, my boys moved a lot more than my girl did. But my girl was breech for as long as they could tell --(from about the 26th week). So, that could have had something to do with her movements. Might have been more cramped or uncomfortable that way--idk. My youngest boy moved less than my oldest also. But he was also in an uncomfortable position from around 26 weeks or so, he was head down but he was like trapped in my hip bone. When I would have the braxton hicks contractions he would quit moving completely.