SI Joint Pain

Has anyone of you experienced sacroiliac joint pain? It's worse when I'm trying to get out of the bed and when I'm standing for long periods. I'm at the point where I limp around for minutes. It started out as pain in my lower back, but it has traveled down to my buttock and thigh. I've done research and it's very common. It's just very painful as well. What helped to ease your pain?