Not only is it imperative you be diagnosed with sleep apnea, if you have it and do not use your machine it can lead to:
PULMONARY HYPERTENSION, A VERY SERIOUS HEALTH PROBLEM. You don't want to go there.
Jan, the first few times I used my machine I thought this is really weird. You do get used to it and the sleep is wonderful.
Congrats on joining the "sleeping with masks" club.