Thanks for writing to us.
Your back pain seems to be associated with your scoliosis and incorrect posture.You need to consult an orthopedician who will advise you an MRI scan of the spine to assess the degree of deformity and any nerve root
The treatment usually involves rest with pain killers in combination with the muscle relaxants along with good physiotherapy
Meanwhile you can do a hot fomentation and apply a local analgesic
gel on the area to relieve the spasm.
Hope this will helps you
Wishing you good health...
Dr Saurabh Gupta.