I have been having this pain on the left side of my body. Its not a bad pain its more like a sore feeling. I havent had fever, or problem using the restroom. Its just a constant sore feeling pain. I went to the doctors to make sure it wasnt a kidney infection and it was not. What else can it be? I have been told that maybe i have pulled a muscle but it dont feel like a muscle, it feels like the organ inside or something.