I've been coughing since 4-5 months, its not severe cough and it doesn't make it hard to do everyday task, but it's dry, and as my cousin was diagnosed with bone tb, i thought of getting a chest xray and tb test, it said (prominent bronchial markings with peribronchial cuffing in the bilateral perhilar regions -? Infective), i went to a pulmonologist, and got esr and cbp with mantoux test, everything came normal and this doc gave me meds for asthma, I've been taking his meds, pulmosmart, and a syrup, it's not helping me, i don't think i have asthma, what should i do now? What would be the reason for my cough?