Ugh. I’m sorry. As a headache sufferer, it’s something I’d never wish on anyone. And sinus issues suck. If I recall, you take anti allergy medication regularly, and it’s not prime allergy season.
This article about sinus issues is interesting and thought you might find it so:
Also, for headaches, my three tiered attempt at reducing them is: Coke (other soda doesn’t work but Coke does), hot shower, Advil. Sometimes the first two are enough.