ME3 - Is Leviathan DLC installed?

I just bought ME3 DLC's Leviathian and From Ashes. How can I tell if these are installed?  I'm wondering mainly about Leviathan b/c it is a 1.65 GB download and didn't seem like nearly enough time to download before I noticed it wasn't in the download queue (when I checked From Ashes was just finishing, but now way Leviathan was already done).  I did get a receipt from MS Billing showing that I bought it.

Wondering if I should download it again.

thanks