Sorry I misunderstood. What I do is use the "unread content button" which should appear as on one of the pictures below , and when on the "unread content" page there should be a link top left or on the left of the same line to "activity". The activity page appears in order of date with latest activity first.
You can also "mark the site read" so that old content that doesn't interest you will not appear in the unread content. "Mark the site read" in the top instance is in the menu extreme top right or in the second just to the right of unread content.