My sister has been having this on and off throughout her pregnancy. I took her to see the midwife yesterday as she hadn't felt any movements for over 6 hours (she is 39 1/2 weeks pregnant). Midwife suggested the same, icy pole, or sweet drink, then lay down for half an hour. When he didn;t move, they did a CTG and he was fine. I think maybe he was sleeping and getting ready to be born!