Read this and I'm sure you will feel better: http://www.in-gender.com/cs/forums/t/63438.aspx
This is a post from charliecats, who is a u/s tech, with images of her own HT daughter at 14 weeks to show why you should not do a gender scan at 14 weeks. Don't worry--high tech is MUCH more reliable than a 14 week gender scan!