Yep, at my 14 week scan bub didn't move at all and I was quite worried. The sonographer was doing all this measuring and I did the same and blurted out "it's awfully still!" The sonographer said "Shhh, that's how we like it, makes the measurements easier to get. There's a heartbeat, that's all that matters"...such a compassionate soul! But at the 19 week scan I did as the other girls in my pg forum suggested and ate a Mars bar an hour before the scan and it worked! Bub did not stop moving the whole time, which was good for us because we wanted to find out the sex.