Yes, there is.....go to the search button above and type in your name....you will then see advanced search, click that, with your name, and then all the posts will come up that you've posted on, or started a thread with..
From the Home page, on the left had side of the page is a list of users that are logged on to the bench. Your name should be first in the list. Select your name off the list (left click on it). A screen appears that shows information about your userid. On the left hand side there are two options to show posts that you have made and threads that you have started.
Hope that helps and welcome.