The angle at which he fell is what's causing the confusion as to where the bruise came from. He was on his back with his left side closest to the floor, and from what I recall he hit the top of his head, came down onto the floor, and ended up facing about the same direction he was when he was lying down, meaning his right shoulder shouldn't have made contact. We simply don't have an answer for why it's there and that's what's causing them distress.

I know this ultimately isn't as big a deal as I'm making it out in my head but I just feel embarrassed and ashamed. It'll take some time to get over it. Thank you.