There is a nerve there that is sensitive to pressure. If it gets worse when you bend over and tip your head upside down, it is definitely your infection causing the problem. Try taking a long hot bath and stretching or a hot shower and stretch while you are in there. If you can imagine that your system has hydraulics and you need your head to drain down your neck and you need blood to pump into your head to help the infection, it might help.
I have suffered from stess-induced problems with my cranial nerves. When the pain starts, the muscles tense even more, exacerbating the problem by restricting the flow of the lymph and circulatory system. In my instance, it is the right side. Because it is effecting your face and ear, I am suspecting that the pressure is the cause of the pain and not a cavity.
You may need antibiotics. The usual test is, if it’s clear, let it be, if it’s green get thee to a doctor. That being said, even if your mucus is not indicating an infection with a funky colour, because you mention throat problems, you may have an infection there that is causing the nerve issue.
With all the weird bacteria around these days, I wouldn’t take any chances. I would go in and check for an infection. You said it has been a few days, but if it has been just getting worse and you feel no better in the throat or nose for 4 or 5 days, I would stress that a doctor’s visit is in order.