(Can't remember mutch)

Ok, i was dreaming that i was walking down one of my friends roads and it was pitch black. Then for some reason i could jump really far like there was really low gravity. I started jumping away from my friend and then i saw i was too far away and tryed to stop but couldn't. Then the next thing i no im lying down in the street (in my dream) and I'm aware at this point that im dreaming. Then suddenly all the noise in the dream just went, like it was all sucked out, then this really intense high pitch noice started ringing in my head and it felt like my legs were being lifted towards the ceiling, then i woke up...

Everytime im having a dream and it changes to a nightmare all the sound disappears and I'm aware that im dreaming so i try to stop it and usually i wake up, but i have never experienced it with the high pitch noise and atm im freaked out by what just happened..

please someone try and explain why i was dreaming this ?