iPhone 4/Retrieving iCloud Photos

[this_is_now1989]

When I updated my software I lost ALL of my photos, while most can be replaced there are a select few I am at a loss for. I went to icloud.com and logged in and it only shows email, reminders, notes, where is my iphone and calander. I don't see an option for photos. I always backed up to iCloud every time I made a major change to my device so I know for a fact the photos are backed up ... Just how do I retrieve them?