Hi, my main MG problem is my breathing.
I've never counted my resp rate by the way

there's a big difference between rushing to the ER, or telling your GP/neurologist about your problems! Always tell your doc about breathing problems. Maybe do some test especially focused on lung function (yes, let a pulmo do that).

Does it help sleeping differently? Maybe with some pillows? Lots of us have probs with sleeping flat on the back.

I have this for years and have breathing probs very often so that I know what to expect and where to wait and where to ask for help asap. You however, sound like you just started the MG route (?), so better safe than sorry and seek immediate help if you are having troubles, especially breathing problems. Especially in the beginning of the disease it can turn nasty fast.

Good luck