Or 17?? YAY!!!! Had u/s today. The called me yesterday and told me my last u/s showed that my cephalic index was slightly elevated (babys head was growing faster then the body), nurse said it could be a symptom of Down Syndrome. At my U/S today, the tech said that it is very common and everything looked perfect!! Oh and she think its a girl too. I will get confirmation at 20 weeks :) Can't wait!