My best guess is that you are experiencing Eustachian tube dysfunction due infection, allergy, or other problem, which is preventing equalization pressure
on the
eardrum.
This can cause sharp pains in the head -- level 10 pain -- that no pain reliever can eliminate.
Scuba divers, airline pilots, and others who are subject to pressure changes call this condition 'squeeze'. If untreated, it can rupture the eardrum.
It seems that everything has a website today.