I started getting those pains slightly when I gained some weight. They actually went away after I had my child, but I was in an auto accident, and my back is in SO much pain when TOM comes. It feels like a ton of pressure pulling my spine inwards. Midol helps, but my doc thinks I might have a slipped disc, since I have constant hip pain. Hummm... have you had an MRI? My pain goes away, but your sticking around that long is not good. I guess you figured that out by now. lol.