I started to feel the twins move when I was only eleven weeks pregnant. I suppose it had something to do with it being my first pregnancy and them being so squeezed in there. At my last OB appointment my only concern was that I had still not really felt the baby moving much...fast forward to this morning. The ultrasound tech said she had never seen such an active baby before. He was literally doing somersaults in my uterus onscreen. His hands were going this way and that, his perfect little legs kicking all the while. An hour later he was still at it. During my OB appointment she tried to find his heartbeat and all that could be heard was the whooshing noises the little machine picks up when the baby is moving...after a few minutes she started laughing and said 'how can I be worried about his heart when he's moving this much?' I suppose I have nothing to worry about...