Clear Urine More Condition_symptoms Why After Urinating Clear Urine Then The Next Time I Pee Yellow Urine?

Why after urinating clear urine then the next time I pee yellow urine? - clear urine more condition_symptoms

I started drinking too much water (1 week ago -) 14 or 15 cups of water per day and I often go to the toilet. The urine is clear, but now, after urinating a few times I realized that once went with my yellow urine.

Do not worry, but I was curious to know why this happens, when I was drinking plenty of water and urine clear, yellow urine.