Appreciate your concern about weight loss but, there are many other causes of weight reduction other that TB, such as fever, fatigue etc.. also the weight loss is not that severe which can be coordinated with TB. you should check on your diet, and as the world says India is Diabetic capital of world , just get your Blood
sugar tested. and consult your homeopath also, as it may be due to some combination of the homeopathic drug.
Next Steps
Focus on Diet. and Rule out all the possibilities before pin pointing any one condition. Still if you want to go with Test FOR TB . Mantoux test is the test advisable also X-ray Chest(if you have cough and feel that it could be LUNG TB.) even MRI also reveals TB (spine TB or POTT's Spine). Chose whatever suits you but, first rule out other possibilities such as improper diet, or stress, depression, increase in workload etc..
Health Tips
Consult a general physician if you by yourself are unable to rule out the causes. STAY HEALTHY.