I had that a few years ago and then I changed my user name. Now, I don't worry. I don't share many details of my life so it's unlikely anyone would recognize me. Only if they were familiar with my internal struggles would they might make the association but people I share that with I have no problem them seeing me here on PC.

One other things - there are so many forums and so many threads and so many posts that the odds of someone you know coming across your profile are extremely slim, I believe.