Re: how do i know if i have a sinus infection
Look here. It goes into the text book signs MD's use to diagnose a sinus infection. Most will not medicate til you have had a fever for at least seven days. SO if you have the symptoms and know you have an infection. Be sure to tell them that the fever has been low grade for seven - ten days.
If we learn by our mistakes, I am working on one hell of an education.