On my lateral side and near by on my back muscles I feel stretched when I go to urinate frequently 1_2 times and the muscles pain little bit and after sometime it is normal . When I go to urinate frequently then it happens other wise it is normal . The muscles are on my lateral left side . It is from very long time . How do I know that why it is happening . Every thing is normal in body except this . It is muscles pain or pain due to left
kidney. Please suggest . It happens on my left side only .