Sleep apnea, i use a c-pap machine and sometimes i'm still tired. is it normal?

Yes: Sleep apnea is a debilitating condition, because you just don't get enough rest. So, even when you use a c-pap machine, it does not mean all of your symptoms will go away. Sleep apnea is a chronic condition. Sorry to not give better news about something that is annoying.

Not ideal: Some people get immediate relief and feel terrific after using their cpap....But not everybody. See you md to make sure that you are using it correctly and getting the best results possible. Some machines have data cards that your md can check. Call to discuss.

Yes and No: If you are not getting a good nights sleep with the cpap, then other factors may be present affecting your sleep. Maybe the air volume needs to be adjusted or maybe a different type of machine or an oral mouthpiece is needed.

This can occur.: Sleepiness can occur for many reasons - under-treated sleep apnea is a big one. I would obtain a download from the smart card to make sure your sleep apnea is well treated. Make sure you get enough hours of sleep and if you are still sleepy, i would consider a sleep evaluation - you may have more than one sleep disorder. You may benefit from medication as well as a pressure adjustment.