Your symptoms are not consistent with autonomic problems associated with breathing. Autonomic dysfunction typically causes symptoms of central apnea, but that doesn't present like you describe...it is basically your body forgetting to breathe. Glad you are seeing a pulmonologist. They will do some basic breathing tests right in the office and prescribe whatever you need.

If you use the inhaler, be sure to rinse your mouth out after use...especially if it is one with steroids. These can cause thrush.