Kidney-stones.???

what causes them?
what is the simtoms if you got them?
is there a redish colour in your urin if you got it?

enyting like foods or fluids that causes it???

Kidney stones

Caused by formation of a crystal in the kidney (in the urinary collecting system part) - more details later
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Various mineral salts in the urine are able to form crystals, particularly when the urine is saturated with that particular mineral salt (calcium phosphate/calcium oxalate most commonly, but uric acid and others also). It is also thought by some authors that the urine contains a substance that prevents formation of stones and that in people prone to kidney stones this substance may be less or absent. However nobody has identified this substance as yet so current explanations remain as:

high levels of mineral salt (calcium salts, uric acid)
presence of urea splitting bacteria in the urine (urine infection with Klebsiella, Serratia or Proteus species)
dehydration

Symptoms range from asymptomatic - no symptoms - to recurrent Urinary Tract Infections (UTI) - to excruciating pain (renal colic). Blood in the urine (haematuria) can sometimes be seen with the naked eye. Most times it requires a haemoglobin test with a urine dipstick to detect it.

Haematuria (blood in the urine) occurs in most but not all cases of kidney stones.

See the wiki page

There certainly can be a reddish color in your urine as it is blood. The stone (if that is what it is) is cutting at some tissue. The symptoms can be pain in the area, difficulty urinating, sometimes nothing at all. I have had them three time. Most people get calcium stones, mine were uric acid, there are a couple of other type also. You should go to your doctor and have him (or her) test your urine for blood. A calcium stone will show on an xray, a uric acid stone will not.

You need to call your M.D. or go to the ER if you don't have one.