I am using the IntelliPAP AutoAdjust Travel CPAP Machine with SmartFlex, Swift FX Nasal Pillow CPAP Mask with Headgear. My humidifier is IntelliPAP Integrated Heated Humidifier and I have the CMS 50D+ Oximeter. It has been four months now and I found my CPAP to be of great help. Over the past month or so, a seemingly increasing level of fatigue has been worrying me a lot. Though it's nothing as bad as it was before I started the CPAP therapy, I was very concerned as to what could be wrong. I feel tired all day and it's quite like I were yet to wake up out of the REM state I must have been in, in my sleep. At present the readings are AHI 0.5 - 0.0, confirmed by oximeter data, no desats. It's as if I've been drugged into sleep. Until I've been put on the CPAP, I had never had REM or even much of dreams even. Neither my body nor the mind has known anything like the kind of sleep state I am experiencing now. I find it really hard to wake up completely and come into the real world for quite some time after getting up. Is this going to improve with time? Hopefully, any time soon?