I pee non stop. feel pressure in my lower stomach. urine tested negative 4 infection. dr. said urine is extremely diluted, but i drink few liquids?

See a doctor ASAP: Diabetes insipidus icreates excessive thirst and excretion of large amounts of very dilute urine, with reduced fluid intake having no effect on urine concentration. The neurological form is most common and called central di, which involves a deficiency of adh (vasopressin). The other is nephrogenic di due to poor response of the kidney to adh (vasopressin). Sounds like this needs to be considered. Good luck.