Sending prayers your way. I know that has to be horrible. I am dealing with pressure in my head also. Had a lot going on and was hospitalized twice. Given antibiotics for a bacterial infection in my tooth and other things going on. I am now home and am 70% better better but still have pressure in my head. I think mine might have to do with my sinuses and bad tooth. The two are connected. So I'm in the process of getting sinus surgery soon and my tooth pulled. Hope that takes care of this. There is pain that runs down from my ear to the occipital gland of the left side. Hurts to even turn my head.
As far as your situation have u looked into having possible High blood pressure? sinus issues? tumor? ear issues? ICP? migraines? anyeurism? infection? concussion? encephalitis? Hope you get the answers your looking for soon.