 [ Symptoms ] i have sinus infection went to er now feel no energy tired and weak [ Disease ] you are in the right way 4days ago when you started treating your respiratory tract infection and the green mucous should stop soon with the antibiotic chronic sinusitis needs a lot of care to be better as nasal sea water lavage drinking plenty of water taking enough vitamin c in diet eating well vitamins and minerals and it is normal to feel tired and no energy as your body is fighting a bacterial infection try to rest and avoid cold air also drink warm fluids ginger thanks