Last night I had been asleep for 1 hour when I woke to what I thought was a noise . All of a sudden my vision went blurry and my hearing went funny , it was like I couldn t hear but I could hear a loud whooshing noise , very loud ,like it was inside my head . I felt like I couldn t move or do anything but I was aware of this and what was going on , it suddenly stopped and I felt fine and went back to sleep , it has left me feeling a bit worried , what was it ?