I mean, for a suicide.. what should somebody expect?
The body is going to die.
If you wanted to die in your sleep like this there's no way to avoid these symptoms.. Because you're killing yourself.
If all the sudden the body is shutting down then of course it's not gonna be really peaceful. Your bodys gonna be reacting to stuff that's literally meant to kill you internally. It's gonna be harming your insides till you're dead. How else is it supposed to work without causing problems? I think of it like a machine that's going to get really confused when something goes wrong.
I wish I could go in real peace but i don't really know how to go, it's very frustrating, scary and tough.