pressure headache

I am getting a pressure maybe a sinus headache which I believe is from sleep apnea therapy. I use an apap machine. My temples ache, ears pip and a little dizzy. No fever, no sinus infection. I started to tske Claritin *antihistamine antihistamine tylenol. Has any one else experienced this?

What are your pressure settings and where is the pressure going during the night? You will need to use the software available to see where it is going.
Having ear disturbances with cpap/apap pressure isn't unheard of but it is not a common complaint.

Are you careful not to cover the CO2 vent with bedding so you don't rebreathe C02?

Do you use a humidifier (at what setting) and is it appropriate for your local environment re ambient humidity?

I don't cover the air vent. My humidifier was at 4,just changed it to 5. I hear that dry sinuses will also make you feel bad. My pressure his good, very low apnea's, and leakeage is great. I took tylenol and claritin today and it stopped the ear popping and headache, now i am just extremely tired.

FWIW...
I had the same / similar issue (headaches) when I first started with CPAP (12) therapy...15 years ago.
When I spoke to my equipment provider and doctor, we changed to a BiPap (6/12) machine.
I could "not tolerate" the constant pressure, but the lower exhale setting solved the problem.
In any case, First thing to do is ...talk to your Doc.