I would recommend seeing your doctor about an overnight oximeter test. If you wake in the morning with a headaches, it is an indication of low oxygen. You may need an oxygen concentrator which is appliance that plugs into your CPap machine.
Good luck and I hope this helps.
Millard
Hi DanBoy1 , Iv'e been on CPAP for about the same time , but not had any of the trouble's you say about , you could take Caviscon for your wind or an Ant-Acid see if that would help you , for the Sinus i would as at your local Chemist for something to ease it ,
As for the Headache's you may like to take up with your Dr , If you don't mind me saying , i don't think CPAP is connected you your trouble's , I do hope iv'e been of some help DanBoy1 , I'm always here if you want to Chat ,
Please Take Care ,