My hospital says that if you haven't felt bub for a while to give them a call. They really don't mind so if your really worried call them, that is what they are there for. I have noticed a pattern with my little man. When I am upset he is quiet and when I am happy he is active, so it could be something as simple as that. Why don't you take yourself for a foot massage or something and relax and before you you know it your little one will be awake and saying 'hi mum, glad your feeling better'.