There's also the lightning bolt (upper left corner) you can click on. It'll also light up when someone posted on a post you started or replied on.
Click on the search tab Hover over the little square at the lower right corner of the search box Another box will open with choices of "your posts" and "your threads"
The button with a shadow of a top half of a body in the top far right where there is three buttons. hover your cursor over it then select your content. Everything you ever posted shows up.