I am having bubbles in my urine from 2 months .Now it is very less only 10% remaining But when it is started two years ago and also now sometime.they are like the detergent powder mix with water and spilt on floor .my urine is exactly look like that bubbles go here and there like the detergent water . In those days i also have confusion which was treated by vitamin b12.all tests are normal including ultrasound urine culture blood test .what the cause of such type of urine