Thanks for coming to HCM.
Let me tell you both world health organisation and Director general of health services have banned serological tests (IgG,IgM) for the diagnosis of TB because of their inconstant results.
You have rightly said tha BCG can interfere with Montoux test.
Lung Tb can be diagnosed by two sputum samples for acid fast bacilli..a simple and widely available test. you may go for chest Xray for the suggestive lesions like consolidation, cavities, fibrosis
, miliary shadows, nodular opacities...etc
If xray is suggestive and sputum is negative you can go for bronchoscopy
and brush cytology for acid fast bacilli.
the usual symptoms which make us think of tb are cough
of any kind lasting more than 2 weeks, blood in the sputum, weight loss
, evening rise of temperature, night sweats
judge yourself and get consultation from a qualified expert....