If you have a very sad life with no good things happening you can't confuse it with a dream ( maybe you can confuse it with a nightmare ). I once woke up after in a dream an old friend told me he will call me. I woke up and instantly he did call me. It was an old friend from highschool. After talking to him and closing the call I did a RC, because the situation was very spooky-like. I had similar other moments but I only did RCs. No jumping out the window, killing people or other crazy things.

So yea, there are many ways you can get confused with real life being a dream.