question: I have had pneumonia for 3 weeks. Fist antibiotic was doxycycline. took for one week the developed a sinus infection so took augmentin and stopped doxy. Took that for one week. Very little improvement in how I felt. Chest xray repeated . R lung cleared Left lung ?. Had ct scan of lungs showing inflammation of left lung. Now on levoquin for 4th day and still feel fatigued and nopt any better. All this after 4 months of sinus infections and various antibiotics. I am 64 and very concerned.