Good points, Nicky. They don't always watch those things in a hospital, unless you tell them what you need.
I'm very relieved to hear they are monitoring your heart. I hope they will do an echo while you are in there. An echo can be hard to do with MG because it involves a lot of small periods of time holding your breath. It's doable though. Make sure you tell them about your headaches (what side of head, how it felt, etc.). They need as many clues as you can give them in order to figure all this out.
I think a stress test would be too hard for you right now, unless they do the chemical one where you don't exercise.
Take it easy, catch up on rest if you can.
Annie