up your intake of water bro...creatine is hard on the kidneys. You want to dilute the stuff as much as you can also keep flushing the system. Although you are pissing constantly, id still take in at least a gallon a day.
Regarding the milk, you might want to watch your intake on milk as you can become lactose intollerant from excess milk intake per day. Also, eat food in replacement of the milk. Milk is not the only bulking item there is. Have a glass or two a day, with good sources of food.