Welcome to HCM,
After going through your history it is clear that you have Pleural Effusion
that is a kind of fluid in pleural cavity
around lungs,you have not mentioned which side is involved.But why this has not resolved in 6 months? This most commonly is due to irregular treatment as stopping drugs in between makes treatment difficult.
Now you are taking DOT therapy please continue it regularly and if fluid is more in cavity it can be aspirated and send for AFB,and R&M study. Your abdominal problem may be related to TB itself or drug induced kindly check your liver
functions as some time Antitubercular drugs may cause hepatitis
If liver function are OK, taking drug on empty stomach and symptomatic drugs prescribed by your chest physician will help to resolve or at least reduce them.