I am 21 weeks and waking up at 4am every night for a couple of hours, just getting sleepy again as it's time to get up. I've noticed that the baby is moving a lot when I'm awake but I don't think the movement is actually waking me. In some weird way is my body responding to the baby's bodyclock, so I am waking when he/she does? More to the point, is there anything I can do about it, I'm knackered!