my water is leaveing

Hi , I'm 5'1 female and I have been on a keto diet for about 8 days and i have been drink at least 4-6 bottle of water but ever since i have been drink more water than i usely do which for me is is like 1 bottle a day, so my weight stated at( 246 50% body fat 35% water ) and i have been checking my weight body fat and water intake it went gradually to 238 weight 50% fat, 33% water how is it possible the more water i drink to more my water weight go down. Some one help. Tweet