2 weeks ago, I was diagnosed with pneumonia and started antibiotics. I never had a fever or chills, just a bad cough, shortness of breath and chest and upper back pain. Within a few days I felt great and seemed to be pretty much better once I finished the antibiotics. Today, 4 days after finishing them, I again have a lot of pain in the area where the pneumonia was. The pain goes between sharp and achy. I am also short of breath as I was before treatment. Is this normal or did the infection not go away completely?