It's the Resmed Airfit F20. I was wondering if the joint connecting the hose and mask could be faulty. I just changed my mask and hose out 3 days ago.
Last night, I woke up, my cheeks were puffed out, filled with air. I felt like I was suffocating. I pulled the mask slightly away from my face and a HUGE gush of air was released!!! Weird, right? So I got a good seal and again it filled with air! I shut my machine off (did some business) and came back, turned it on. Normal. Went back to sleep. Upon waking, it was doing it again!!! It's like it's not venting AT ALL!!! Any ideas??? Airsense10 machine.