Can anyone click on my username and see my personal email address?

Someone clicked on my username on Microsoft Community Forum and found my personal email address they posted my email address on another forum. I was trusting and never had any problem on the Microsoft Forum. I did post it in an area that was "public". Now it seems I will need to change my email address. I have removed my info from Microsoft Forum. Do I need to do that here? I will also be updating my email here. Any help or advice would be appreciated. I know not to open attachments from strangers. I have the Bing mail app on my Windows 8.1 system. How effective is Norton at screening my email? I might want to change my user name as well.