@faxen3 At first, log out of your Origin client to download and install the latest version of Origin at www.origin.com/download (and make sure you have your Origin account ready as well). Close the origin client and go directly to you origin folder C:\Program Files\Origin Games. Run the origin.exe in this folder with a rightclick -> run as administrator.
Head over to your games library, click with the right mouse button on Titanfall and check if there is the option for "Install" or "Check for updates" available. If that won't work, it might be necessary to delete and re-install the game.
Cheers
Basti
