Diablo 3 not working? Error 33?

I just made my battlenet account and signed in to play Diablo 3. It says that battlenet is down due to maintenance then it says "error 33". How long will it be down and why is there an error? I'm way too excited....
Update: Jane D, thank you. I was freaking out and didn't even consider that.
Jim H, that happened to me too when I typed in my battlenet ID, but then I typed in the email that I used to make my battlenet and that worked.

Thanks!
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