Sinus headaches aren't common, and what most people think or sinus headaches are just migraines with sinus symptoms.
If you have recurrent headaches in your sinus or facial area, chances are you're dealing with a migraine.
If your headache is paired with a fever, phlegm, or any other indication that you're getting sick, you might actually be able to blame an underlying sinus infection.
If you do have a sinus infection, the headaches should go away after taking antibiotics to knock out the infection.