If you're feeling down, do you find yourself more likely to have odd vivid and/or disturbing nightmares?

For the past week or so, I've been feeling less than best mentally (sleeping all day, lost motivation to do much, blowing people off - even when they're obviously and genuinely only being nice - because I feel so terrible, being much more whiny/clingy/cynical/angry) and have found myself having not very nice dreams.