You need to give it 2-3 months. Doesn't hurt to submit your URL to the search engines. You can track which spiders come and when in the admin panel > system tab > spiders/robots section. Also make sure you give the bot group access to the sections you want them to index. And finally get some content going. 16 posts in 2 weeks isn't enough. You need to get several posts every day on there to get the content level up. The more fresh content the bots see the better.