I had this dream where I was working under my car and crushed my right hand. Went to the hospital and they had to amputate it at the wrist. After when I got home, I was looking at the stitches and the empty space where my hand should be. I could feel my right fingers that were gone and I was thinking this must be those phantom sensations amputees talk about. Then without really thinking about it I picked up a knife and sat it down on the kitchen table. I wasn't looking at my hands when I did it but I was like wait a minute, "I fucking just did that with my right hand!?". I looked down at my right wrist, still missing a hand but I made a fist with it that I could feel perfectly. I said to myself, "My hand isn't gone, it's just invisible". I went to reach for the knife again with my missing hand. It was like slow motion, I was sweating and anxious. Is it mental powers or invisible, or perhaps my mind was playing tricks on me... before I touched the knife I woke up in a hospital bed, I was just dreaming about my hand but my whole right arm was in crushing pain. I looked over at it and it was a bloody mess. My hand was gone with bones sticking out where my wrist should be. I was screaming "It's really gone". Then I woke up for real, my arm and hand was in fact in a lot of pain from how I was laying on it. First time I remember having a dream within a dream.