It's been 5 days and i still have a uti. i've been drinking nothing but water and my pee color has changed to a highlight yellow.

UTI treatment: If you have been on a UTI antibiotic for 5 days and your symptoms are no better (e.g. urinary urgency, frequency, painful urination), you probably need a different antibiotic. Or the diagnosis is wrong. Contact your doctor for professional advice. Urine color makes no difference, and you don't need to drink only water. A normal diet is OK during UTI treatment. Good luck!