Diet Sodas Causing Anxiety Attacks?

In recent years, I've been experiencing chronic anxiety attacks.  A few weeks ago, my sister came across an article which named panic attacks as a side effect of aspartame, and she knew that I'd been drinking only diet sodas since 2006. So, of course, I'm looking into that as a cause of my anxiety attacks.  Have you experienced anything like this as a result of drinking diet sodas?