Confirm Diagnosis. This treatment. ?

My wife had cough since last 15 days and fever was there for starting 3 days (now it is not there) same problem was there last year also at same month ( but last only cough was there which lasts for 1 month, no fever), now we went to physician and he suggest CT Chest and Sputum For AFB and blood test , And the result was CT Chest- Consolidation right upper chest ( however last year also x-ray shows same thing when cough was there but after one month when cough went off x-ray shows normal) now HB-10 , ESR-99, TLC - 3800, Platelets -1.1 lakh, Sputum AFB 3 sample - Negative. QuantiFeron Gold - Positive however No weight loss noticed, no  appetite  changes, Doctor advised it could be TB and started with Tab Rifampicin 450mg, Tab INH 300mg, Tab Pyrazinamide 750mg, Tab Ethambutol 600mg, And Pyridoxine 40mg. Now my question is problem occurs two time one last year and now this time, in between and before last year no problem at all no cough entire year, so should I go with this treatment ..??