As you told that you are suffering from tuberculosis
,I think it should be diagnosed by an expert and I think you might be having TB of lungs.
Now your main complain is having vague complain of stomach pain,we should rule out Tuberculosis of intestine called abdominal Koche.
Many a time it is difficult to diagnose abdominal Koche,remains undiagnosed for pretty long time.
You seek advise specialist who diagnosed TB and discuss with him.