Bro I think this is nothing, it’s happened to me many times. Actually happened to me this morning and yah it sucks and definitely made me worry.

I mean maybe someone more knowledgeable can answer but I don’t think you can generate very much force with just your arm while laying down and hitting yourself accidentally. It’s nothing compared to a punch in a an actual fight.

I definitely don’t think there’s gonna be any literature published on this lol. It’s the type o problem only people in our very specific condition with our very specific type of health anxiety would ever worry about and that group of people is probably relatively very small.