Generally if you don't miss or skip the treatment of any TB then it doesn't convert into MDR TB .
Pain around the belly and dizziness can be due to many reason.
But in your case one symptom as weight loss could be concern point cause after taking treatment or during treatment generally weight gain is happen , weight loss doesn't happen so what's the exact reason behind that weight loss you should take consultation from a doctor .
Next Steps
Take consultation from a doctor.
Health Tips
Keep postive attitude always to fight any disease and any problems.