I have been experiencing abdominal pain on the right side about 3 inches under my ribs. The pain radiates in my back and upwards towards my shoulders, but not in the shoulder area. I occasionally get a twinge of pain in the left side of my abdomen also, but not nearly as often as the right. When this began nearly two months ago, I thought it was a kidney stone because I have medullary sponge kidneys and have had lots of kidney stones. I saw my urologist, and he did an xray, and saw a stone on my left side but not the right. He said that he can't tell me for sure that it's not a kidney stone. But With the pain that I'm experiencing in my stomach, I feel like it's not a kidney stone at all. I have experienced some symptoms that would make me think it's a kidney stone, I've felt the cutting feeling inside like when a stone is actually getting ready to pass. But I haven't seen any stones whatsoever. I have also been experiencing a lot of headaches, which I normally don't get. And I've also had a lot of dizzy spells, sometimes one a day, sometimes 4 a day. It's like when you get up too fast and you feel like you're going to black out and you get off balance for a moment. Most of the time when it happens I am either getting up or sitting down. But I have had the dizzy spells when I was simply standing. I don't know if these are related or not. But I felt like I should give you all of the symptoms.