There have been time I've had hyper-realistic dreams, so much so that I wake up in physical pain like that which the dream would cause. Only happened a few times though. As far as confusing dreams in general I've done that a lot but mostly because my dreams end up happening, so if they don't/haven't happened yet I get a little confused. I think it's nothing to overly worry about because either like attracts like or I just know all the weirdos because half of my friends can relate to having dreams that they confuse with reality at one point or another. Doesn't mean it isn't bad, just not necessarily.