Welcome to the hosenose brigade!
Glad it’s working for you. I absolutely love my CPAP, although SWMBO says she’s now sleeping with Darth Vader. 
A couple of you have reported significant weight loss, I see.
What about this treatment makes one lose weight?
A lot of times, it’s not that the treatment makes you lose weight- it’s that the prior sleep loss caused weight gain. Not getting enough restful sleep messes with the hormones cortisol, grehlin, and leptin, and causes weight gain.
A friend used to call me Darth when we slept together, too.
It can also be easier to lose weight when you’re not half-asleep and have more energy to devote to exercising.