Slight tickle and cough and heavy voice.

So, i was having a Lot of cough with phlegm, last week my sputum culture showed heavy growth of Klebsiella pneumoniae. I consulted pulmonologist, i was put on Ceftum 500 twice a day, now my coughing has greatly reduced but still sometimes my throat tickles and i have cough(very less sputum production now) kind of like semi dry cough... also i have noticed since 1-2 weeks i have a heavy voice sometimes, is it a side effect of this pneumoniae bacteria and will it go away? Also I had chest xray before it was normal no sign of pneumonia there, only symptom was productive cough. Now my ceftum course is complete, but that heaviness sometimes and irritation of throat (very mild) and when I squeeze my chest after a workout in top right i feel a little pain like we use to have after over exertion... please let me know what should I do and will it get bttr? Also, since 4-5 weeks i have observed a small firm lump in right neck(nt visible outside) can b touched and felt only inside skin. Plz advic