Hello pavan,
Any cough over 2 weeks required certain investigation to rule out tuberculosis. There is nothing to worry if you never developed a fever or weight loss.
Kindly upload your whole CBC report. Also complete fasting ESR and a chest x ray is highly advisable.
Once we rule out Pulmonary TB, there is nothing to worry.
However you may definitely follow prescription from Dr. Vengatesh.
Next Steps
kindly upload reports and consult via practo.