Where is my adsense?

Can someone help me out with adsense? It's not showing up in my blog but it's supposed to! I've put the codes in and done it exactly how I'm supposed to through blogger. I even approved the email from adsense asking blogger to have permission to use the code ..but still nothing is on my blog! The help page here is kind of worthless. All it does is explain how to put adsense on your page, but there aren't any trouble shooting posts!