You can have a look at your recently posted comments on your [User Page -> Activity -> Comments][1] 

![][2]:

There's no way to search through all recent comments - or comments between a specific date - unless you're willing to [take the API][3] route.

You can search though your answers by typing `user:me <keywords>` in the search box. To search only answers use the condition `is:answer` in the search box. All this documentation is available in the [search page as well][4].  


  [1]: http://superuser.com/users/42672/barlop?tab=activity#apage_1-afilter_comments
  [2]: https://i.sstatic.net/MoTuR.png
  [3]: http://api.superuser.com/1.1/usage/methods/comments
  [4]: http://superuser.com/search?