If the kidney cleanse does not help and you think you have kidney stones, I am good friends with a naturopathic doctor and and studying under him to hopefully become one myself one day and here is what I recommend if you find you have stones or if the above kidney cleanse does not work.
Higher than normal levels of oxalate related to a diet high in oxalic containing foods, such as rhubarb, spinach, leafy vegetables, and coffee, can promote kidney stone formation. High levels of dietary refined carbohydrates can also cause kidney stones. Sugar stimulates the pancreas to release insulin, causing increased calcium excretion through the urine. Other dietary factors that cause increased calcium excretion in the urine and promote stone formation are increased intakes of coffee, colas, acid-forming diets (such as high protein and grains), insufficient water intake, and excessive salt consumption. Soft drinks containing phosphoric acid can also encourage the formation of kidney stones and should be completely eliminated. The most important dietary actions are to increase your intake of pure filtered water, fiber, and green vegetables, and reduce refined sugar consumption. Foods that are helpful in decreasing kidney stone formation include cranberries, black cherries, rice bran, kombucha tea. In addition to avoiding sugar, also avoid or reduce your intake of salt, dairy products, caffeine, alcohol, refined carbohydrates, nuts, chocolate, pepper, and animal proteins.
These juices can help stimulate the overall health of the urinary tract and potentially flush out the stones: lemon juice; carrot, beet, and cucumber juice with a dash of garlic and/or horseradish; and/or cranberry and watermelon juice.
Helpful nutrients include: magnesium, vitamin B6, vitamin C (keep your total daily intake below 6 grams to avoid increasing oxalate formation), vitamin A, proteolytic enzymes (away from meals), raw kidney glandulars, fat-soluble chlorophyll, lipoic acid, and the amino acids glutamic acid, lysine, and methionine.
Of course.... none of this would be necessary if you cleansed your kidneys at least twice a year and your liver once a year, if you don't use supplements at all the amount of cleansing required is even less. You can eat the above "no-no" foods as long as you make sure you cleanse so if the calcium is building up you can at least flush it out before it starts to form stones. Remember man, problems like high cholesterol, clogged aerteries, heart problems and kidney stones take in most cases years to develop, so if you do some annual spring cleaning you won't even have to worry about it.
Good luck man