Lose stool for two weeks, last 4 days i feel dehydrated and my pee is dark. this morning begining stool was white and rest was brown. what could it be?

Liver problem.: Loose stools can make you dehydrated, which makes pee darker than normal. But dark pee (Coke-colored) can also be a sign of liver problems. And white or clay-colored stool means liver problems. For these symptoms, a visit to the doctor is in order. Hepatitis (inflammation of the liver) or gallbladder trouble are possible causes for these symptoms.