Bought Battlefield 3 Premium AND Battlefield 3 Premium Edition HELP

Hello!
I have recently bought Battlefield 3 Premium, however I did not notice that it was just the DLC's. Next, I bought Battlefield 3 Premium Edition (excuse my cluelessnesss), and all went smooth. However, now I have been playing the Battlefield 3 Premium Edition and do not need/cannot use the seperate premium DLC, I attempted to find the serial key that I could give to a friend (and not have wasted $50) and tempt him to buy just battlefield 3 himself. However, upon checking my order history in Origin I have only found a reciept for $50 and an "order code" for my Battlefield 3 Premium DLC's and no serial key. If you could kindly advise me on what I should do next and how to access the Battlefield 3 Premium serial key, it would be much appreciated.

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