Those moments

Do you ever have those moments where things seem off? Nothing is really wrong, but you have a sense that something is not quite right?  I am having one of those afternoons.  And, I'm not sure what to do with it.  For so long this feeling was associated with anxiety or panic, or well, depression.  There was no sense that things would be ok.  Everything was off, or bad, or wrong.  And so now, I am not sure how to handle this feeling.