My lower left back has been sore for almost a week. Then starting last night I've had acute pain in my lower left abdomen going all the way down to my left nut. It got really bad to today so I went to see my doctor. He said he thinks it might be a kidney stone and sent me to get a CAT scan. Now I'm just waiting on the results. Anyone have a kidney stone before? Does this sound like one? Is it going to hurt like a bitch to pass it?