There are other similar questions that have been answered BUT none of those answers worked for me.
The page is http://www.thatwasvegan.com
I was trying to add a google analytics plug in, and I tried a couple- Google Analyticator, Google Analytics Dashboard, and Google Analytics for WorPress. At some point I entered the "UA-XXXXXXX-1" key code where it asked for code, not realizing that was incorrect. Now it's on my page and all my posts, top left hand of the screen.
I tried uninstalling/deleting all the plug ins, but the key code is still there on the page.