I've been having this chest tightness and shortness of breath for about four months now, and it's getting pretty bad. About six months ago, I noticed my sputum turning grey once a day too. My doctor did a sputum culture and said it's streptococci pneumonia, but my X-ray and ECG were normal. I was on Novamax 500mg three times a day, but I still feel tightness in my chest and have grey sputum. A CT scan showed fibrotic strands on my upper right lobe, which my doctor said was from a past infection. I'm not on any meds right now, but I'm still struggling with these symptoms. Do you have any idea what might be going on or what steps I should take next? It's really affecting my daily life.

Consider consulting a pulmonologist for further evaluation and management, as your symptoms persist despite treatment and normal heart tests; the CT scan findings suggest possible pulmonary fibrosis or scarring, which may be causing your chest tightness and shortness of breath; the pulmonologist can assess your condition, potentially ordering additional tests like pulmonary function tests (PFTs) or bronchoscopy, and develop a personalized treatment plan to alleviate your symptoms.