I am 20 year old, 167cm, 93kgs, female. I used to drink a lot of water (2 litres of still water a day). During summer I drank less but now I drink that much again. I do not feel thirsty, I make myself drink because I know it is healthy. At first everything was fine but now I pee 2-4 times a day and very little. I used to pee more when I drank little water. I do not sweat. I have read some somewhere that pregnant women pee little but I am not sexually active. What should I do?