As long as you haven't given anyone your personal information connected with your screen name here, there's no way they would know who you are here.... that would probably include using links or posting things here that you have also posted on your personal website...you know what I mean?
If you happen to have already given out some of that info, you can always ask DocJohn to end this account and start a new one (Just be sure not to tell anyone you changed your name!!!) A few others have done this, though, and usually your friends here will figure it out
Please take care of yourself---and that includes getting enough sleep!