From past 3 months I'm having urine passage burning sensation , but day to day it varies burning may increase or it may feel that I don't have any problem later right side back feels stiffness some time very small ache occur,I consulted urologist and  have taken creatine test also KUB ultrasound but all the results are normal , what to do next I don't know which doctor to consult next the burning sensation persist stiffness is also there and the condition become more when I try to bend , run or try to do  any physical exercise. Creatine Serum/plasma      1.1    ref 0.9-1.3 mg/dL I have attached kub ,urine routine result