Hi Lowlight,
What you have said here and opened up about takes alot of courage, especially when you feel you may be judged. Rest assured i dont think that will happen here.
I think Wierdy hit the nail on the head though, i dont think anyone here can really make a call on that or tell you what to do. But i think she pointed you in the right direction with a potential evaluation, but i say you should do so if your really, seriously concerned about harming someone.
Let us know how it goes. No one is alone here.