I have one pending DUI in Virginia and am a resident of Virginia. I just received a DUI in West Virginia. When will Virginia authorities find out about my West Virginia DUI? I am concerned because I report to pre-trial services once a week in Virginia.

You should have a good DUI attorney in both states to help you sort through this. 

The pretrial folks may have a requirement that you report things directly, and failure to report may be a separate violation. 

In West Virginia, the best DUI attorney is Harley Wagner, who can be found on AVVO. He is in Martinsburg but he covers the whole state.