If it is a sinus infection you had better get an anti biotic.
I know a fellow who had a sinus infection and the virus went all through his body, had to be hospitalized.
I got my anti biotic filled yesterday just in case.
I don’t know if they still sell Thera flu, but it sure seemed to work on me. Also ginger with lemon and honey. Stash Tea makes a pretty good one if you don’t want to shred some ginger.