You sure it's the flu? Symptoms of flu and sinusitis are very similar.. flu though will have fever as a dominate symptom...
I'm working through a bad dose of sinusitis.. 3wks so far.. headache on top, in the back, above the eyes, heavy face, lots of mucus, dizzy spells off and on all day.. throat sore from coughing up fat chunks... it's HELL... and today is the best I've felt since XMAS...
gl to your illness.. be smart... LOTS of water for any illness (almost), lots of rest.. and some ibu for the pressure. Unless it truly is the flu, then tylenol.
KNIVES>.. where? O_O