TB of lungs (Pulmonary) is curable by short course of multidrugs antitubercular therapy ,you have already taken for 5 months. Yes they may have nausea
and some time even jaundice
due to liver
may also cause burning in feets du to neuropathy.But you shuld check your liver function if OK in consultation with doctor may take anti emetics and continue to take ATT so to finished and let doctor advise you that you can stop antitubercular drugs or not because some time you may required to take for some more time check your old and new Xrays.