Am i parched? i dont drink profusely of sea and sometiems nil?

Sometimes all i drink is coke and no water..sometimes i go short water for like a month and only drink lots of coke.
sometimes i grain like a pain under my ribs.. could that be the kidneys? It's not that recurrently but sometiems i do feel a bit of pain.. its like it comes and go.

I am 14 yrs old and i also have a lot of pimples (i conjecture its cause of lack of water)


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