I'm really concerned because I've had this persistent cough for 25 days now, and it's accompanied by pain on the left side of my chest and a lot of fatigue, but I don't have any fever. I went to a doctor who recommended some tests and here are the results: my ESR is at 48 mm1hr, TEC is 4.17 Cumm, and while my CBC came back normal, my white blood cell count is at 13.9 Thmm3. My Serum Vitamin D3 is pretty low at 20.5 ngml, and I tested negative for Sputum for AFB. I'm not sure what all this means and should I be worried about these results?