Is it the Water?

"I just started college and, like most college students, I don't have a heck of a lot of money to throw around. So I decided that, Monday through Friday, I would only drink water. Weekends, I allow myself all the soda, juice, milk, whatever, that I want (I don't drink alcohol at all). I have kept my "Water on Weekdays" rule going for about two months now and I have noticed an increase in the frequency with which I have to pee. My guess is that I may be consuming more liquid than in the past, but I don't think it’s that much more. Does this sound like a familiar situation?"