Do you ever find yourself worrying terribly about something, only to realize that you have no earthly idea what you're worrying about?
And then sat there and tried to think about what could have been the source/object of the worry, and eventually come to the conclusion that there really, truly is nothing that you should be worried about right now?
But then still not been able to stop worrying? And then getting even more worried because you've got this objectless dread that you can't shake, which maybe means that you're having some kind of psychic premonition or something, and that something must be about to happen that really will be cause for worry?
...not that this happens to me. I was just, you know, wondering.