Sometimes, if the allergens are really beastly, I will get a combination sinus/migraine (sigrain?) headache.
Both are terribly disabling by themselves, but together, they bring a whole new level of pain. I empathize with you.
I dub your headaches Migrus Magnus.
Mine almost never lead to headaches any more. I get visual symptoms and sometimes I can’t come up with words I’m trying to say. If I do get a headache it’s not disabling.
Those visual symptoms drive me nutso. When I can get to a 20oz Mountain Dew I drink one as a beta blocker. Dew is not the most healthy drink but it’s the cheapest beta blocker I’ve found.