Ahhh...she. LOL I hardly ever felt my daughter move. Girls just seem to be less active usually. And when she did move, it was normally very slight movements. I probably didn't recognize movement much of the time being that she was my first. Probably thought it was gas. LOL With my son, he was moving CONSTANTLY, and hard enough to let me know he was in there and he was a coming out...when he got darned good and ready.
So even if you don't feel a lot of movement, if the doc says everything's fine and you're hearing the heartbeat and all, don't sweat it. Some baby's just don't make much of a fuss in there and others wail on ya.