Question about using my personal Information.?

I was answering a question on the Yahoo Health section. Before putting my answer in I reviewed other people's answers and I came across a website that I thought could help me. When I went into the website it turned out to be a site to start your own domain. But when I came back to report this abuse. The site was gone. I ran scans on my computer and they were negative. But what does this mean for me. Do they now have access to my email address and if I go into my bank account can they get my password and information. What should I do.