HI, I'm 23 yrs. old, female. last August 7, I experienced throat itchiness, productive cough and shortness of breath and when I sought consult to my doctor, she prescribed me to take azithromycin x 3 days, salbutamol+guaifenesin x 5 days and cetirizine x 7 days. everything were resolved except for the cough so I was advised to get a chest x-ray. The report said that there is minimal haziness in the paracardiac area which could be pneumonitis or overlapping of vascular markings. the doctor did not giveme anymore antibiotics and said that it would resolve eventually but until now there is occassional cough and midback pain. What does that mean?