I got bucked off of my horse and kicked by her as we ended a gallop. As you can imagine I flew a bit, or felt like I did anyways. I was in a daze for a bit. Ended up having to go to the hospital where I found out I had a broken collar bone. Funny enough it did not really hurt at first, but got much worse later on. I had to get 30 stitches too, and I got my shirt ruined as well.
That was a few years ago and I am fine now, and I am still riding the same horse.