You can view your unshared photos by launching the Photoshop Express Organizer. You can get to this by rolling your mouse over the "Me" from the header at the top of the page and selecting "My library". That will open a new window with Express Organizer inside it. From there, select "Everything" in the left panel, you will be able to see all your unshared photos.
The Express organizer is also a handy tool for creating new albums, editing the albums you already have shared, moving multiple photos around, or quickly accessing the Express Editor.