I got a confirmation email stating my copy of ES:V has been shipped but when I check my amazon account, there is no skyrim in my order section! I had this pre orderd for months.

What gives? All of my orders from 6 months ago on amazon are all recorded on my account. I checked the tracking code and it seems to be in transit.

Should I be even remotely concerned ?

Did anyone's skyrim "disappear" from their amazon account as well?

Yep, mine did. I actually found it (with direction from my wife) at the very end of my list for some reason. No worries, Amazon is always solid with their release date deliveries...from here on out is all up to UPS.

Strange, if you click on "Orders by Date" at the top it should be listed there.

It disappeared into the archived orders. Depending on when you preordered it, you might have to expand your date range. By default it only shows orders from the past month, there should be a dropdown box on the top right.