Originally Posted by en bloc

Central apnea, does commonly happen when asleep...or just falling to sleep. I don't think what you have going is anxiety at all. If you have other autonomic dysfunction, then you may have some central apnea as well. The pulmonologist can do a sleep study to see if you stop breathing at all...this would confirm it.

It's your other symptoms that didn't sound like apnea...but clearly there is some sort of abnormality. I feel confident the pulmonologist will be able to tell you exactly what is going on and offer ways to help relieve your symptoms.