I Have Had Walking Pneumonia Treated For 7 Days With

I have had walking pneumonia treated for 7 days with vancomycin. I still have chest pain and a productie bloody/brown cough, weakness, and low energy. Dr. did chest x ray today and said that is was cloudy, probabaly clearing up and started me o doxyclycline. I am allergic to penicillan. I am 59 years old. I am also having chills and fever low grade YYYY@YYYY