Supposedly this worm will start doing its dirty work on April 1.
There is a strong possibility that you do not have this worm.
However, if you think you might be infected or would like to run the removal tool just in case, use the following link:

http://www.bdtools.net/how-to-remove-downadup.php

This will take you to a bitdefender page on the topic that will give you the download.

The tool is simple to run.

If you do not have an infection it will give you a nice message telling you.

If you do have the infection it will provide the options for removal.

If you have a different anti-virus program that you prefer working with, then just do a quick search on their site for any special removal tool.
Or, make sure to update all your anti-virus definitions and do a full system scan before April 1.

It is not a bad idea to do a full scan in any case.

Your anti-virus program does you little good if it is not updated or if you don’t do a scan every now and then.