To see assignments you are committed to click on the “Commitments” tab at the top of your account. It's important that you check your commitments to ensure that all days you have worked have a request page listed, and your requests are active.
You will also be able to see your last 7 days worked, but only for requests that have ended, right on this page as well. If the request is still active, it will still show under "upcoming", as you still have upcoming days to work. Once the request ends it will appear under the last 7 days worked section.