I agree with CK and don't think you've done any harm. Otherwise, there would be warnings everywhere about women always making sure their bellies were covered outside, in light and sunny houses etc.

FWIW, the most reliable way I've found of getting movement is drinking either a cold diet coke or very cold glass of water and then lying still. Usually within 5 to 10 minutes I'll get some level of movement. Chocolate, cake or anything else that's a huge sugar hit works too.