Thank you all for your helpful replies!!!
An update to my update......I went to the Medical supply place and told them about my mask issues. They suggested I try the Airfit F20 FFM. So far the good news is that it doesn't seem to leak as much as the Airfit F30 AND I can sleep on my side without one nostril closing. The not-so-good news is that I wake up with red indentation marks across my nose and cheeks.

SO..... my next question is.....would it be advisable for me to get those padded things that I see others mentioning? And, if so, where/how do I get them?
Finally, the other good news is that I got my heated hose so that I'm not waking up with either a dry mouth or water leaking all over my pillow from the condensation when I turn up the humidity.
I am hoping that, little by little, I am getting there.....wherever "there" is!!!! My dream is to have a really good, solid night's sleep! And many more after that!
Thank you again for your thoughtful replies!
Wordbabe