The Feeling of Pain

I never really dream about pain, but I did  last week at some point, and I'll never forget the dream.I remember sitting high up on a ledge looking down. There was a girl on my right and a guy down below me with a stapler gun. He started shooting staples around and missed me bya a mile, I looked to my right and saw he hit the girl in the chest. She wasn't bleeding or anything which I thought was a bit strange. Next thing I knew there was a pain in my right side which was killing me, I looked down and saw that he got me. But I never saw him shoot me at all.... I then fall off the edge where I was and wake up.