Hello Thanks for query . Severe back pain and pain above waist is mostly due to presence of stone either in kidney or ureter . Please consult qualified Urologist for clinical and digital rectal examination and get following basic tests done to confirm the diagnosis. 1) Urine routine and culture. 2) Ultrasound scanning of abdomen and pelvis In the mean while take broad spectrum antibiotic like Cefixime along with anti spasmodic like Cyclopam twice daily . Further treatment will depend upon result of these tests ,site and size of stone (If detected )and final diagnosis. Dr.Patil. Further treatment will depend upon result of these tests and final diagnosis.