I have been exhausted for a year and my family Doctor said I'm just getting old. I wasn't happy with that answer. My wife suggested a sleep study and my Doctor set me up with a clinic.
My AHI at the clinic was 58 per hour. The Doctor said that is severe.
Am I glad I went.
I recommend anyone who suspects abnormal tiredness to have a study done.
I found this website and read with interest and learned so much while I had my loaner machine, a Resmed S9 autoset.
Great instructions even telling how to set the machine settings. My provider was impressed I knew so much and understood so much about apnea. I did not have any problems with my provider and they were really good and let me use 3 different masks including nose pillows but I had the dry mouth thing and I guess I breath through my mouth so I stayed with the F10 full face.
I ordered the Resmed S9 autoset and it arrived 2 weeks ago.
My AHI is usually between 0 and 4.5 now.
I am getting a better sleep and amazingly I don't need to get up at 3 am for the washroom break as in the past 4 years. I still become tired by the afternoon but not like before.
Thanks everyone for great honest advice on this forum. I'm glad it is available.