Your upper back pain may be due to muscular sprain.
As your mri is normal so nothing to bother much.
As you had TB in past, do you have any respiratory symptoms like Cough, Breathing problem?
Next Steps
Get chest x-ray done
Health Tips
avoid Weight lifting.
Tab Xykaa MR 4 mg (after food) twice daily for 5 days
Tab Sompraz 40 mg (empty stomach)once daily for 5 days