Taking bactrimds for impetigo. few days ago pain/press. behind eyes, nausea, swollen glands back of head, fever, bodyaches, flu shot in sept. ideas?

Sinus infection?: Pain behind your eyes is typical for a sinus infection. The nausea, sweats, chills and body aches could be signs of a bacterial or viral infection, including the flu or mono. The flu shot protects 50-70% of healthy adults, so you can still get the flu, which is a virus. If it's a bacterial infection of your sinuses, Bactrim (sulfamethoxazole and trimethoprim) likely isn't enough. Either way, you're very ill, so please call your doc!