I started getting lower back pain on my right side several years ago when I mowed the lawn. I didn\'t know what it was expect to think I was getting older. It started to get very painful when standing. The pain was relieved when I sat down. Lying down seemed to make the pain go away. I was woried that some major organs were causing this problem until I went to the emergency roor yesterday and was found to have a sacroilliac problem. They gave me a prescription for pain and sent me home.