Spinal Tuberculosis (TB) causes pain due to the bacteria causing destruction of bone in Spine ..Pain is worse on changing positions ..appropriate dose TB drugs if effective taken daily would help slowly reduce the pain over 2-3months ..during that time should keep a watch on weakness in legs..
If pain is worsening while on TB drugs that suggests maybe you are not taking proper dose or its drug resistant TB
Ideally i recommend a biopsy before starting TB drugs to check if the medicines are going to be effective or not.
Next Steps
please share your MRI images & biopsy reports alongwith any blood reports
Share list of TB drugs which you are taking with dosage..
also share your bodyweight
Health Tips
painkillers will help only if there is pain while you are lying in bed..
but you will still experience pain on changing positions..
Keep some patience as its just been 20 days since you started TB drugs
There's a long battle ahead for the next one year ..
Rgds
Dr Bhavin Shial
Consultant Spine Surgeon
Mumbai