It is possible that these symptoms are linked, but also very likely that they are not. Kidney
pain usually suggests infection or kidney stones
. Infection is serious, and would get quickly worse, and include fever, and other ill feelings. Kidney stones may cause stabbing pains or constant aches or both. The pain is worse if the stone is moving. You may also be chronically dehydrated. This would cause kidney pain, though probably less severe. It would also cause constipation.