Are you are eating dehydrated food,? If not, then the meals that you eat are probably a significant source of moisture in your diet.
Bottom line is this... drinking more water is not going to hurt you, (unless it is not clean, potable water). If you think your sides hurt because of lack of water, then try drinking more water. If your sides continue to hurt, then chances are your doctor was right that it is a different issue rather than your water intake.
the thing is i don't feel thirsty as often as most people do, i've always only drank 1 cup of water per day when i come home from work and finish my bath at 7pm and i would feel the need to drink only once during this time and no more for the rest of the day.
its been like this for 6 years and my lower sides are starting to hurt whenever i don't drink at all. i went to my doctor and had my urine checked and he said my kidney is fine, but i keep telling him again that when i don't drink water the sides would hurt or feel abit stiff but he said its from muscle pain and stress...i just don't know though nothing major has happened so far (i'm 21) in the morning i would hurry off without drinking anything, then i would get maybe a drink at lunch though not always, then i would come home and everytime i finish my bath i would feel extremely thirsty and would have 1-2 cups of water. then i would go to bed without need to drink anything again until the next morning. and every morning when i get up, i would have to go REALLY BAD.
so basically i only drink 1 cup of water per day, i don't drink 1 drop of liquid from morning till late afternoon when i come home so is this normal? my buddy doesn't drink much either except for coke and beer late in the evening. for me though it just feels awful to gulp any liquid down when i'm not thirsty at all, especially with water being so tasteless.
well thanks for the help guys, really appreciate it thank you!