<s>[INST] Hi I have pneumonia and have been on a z pack for 4 days now. I also have been taking mucinex and recently was prescribed cough medicine with codine. I am having EXTREME sharp pains in my infected lung. I seem to only get them at night or when Im about to go to bed. They arent only when I breath but are constant. [/INST] Hi dear I can understand your concern... Noted you have pneumonia.... In which lung parenchymal inflamed so pain ... But a pain is constant and somewhat severe here mild pleural inflammation may be there and ya pleura very sensitive.... So continue with antibiotic...and after resolution of consolidation pain will subside with resolving pleural inflammation. Analgesic can be taken if pain troublesome Is any unusual symptom contact doc immediately..... Hope my suggestion is helpful. Chat Doctor.  </s>