I need a second opinion please. I went to have a cytoscopy done two weeks ago?

[Heaven bound]

and the specilist saw growing white blood cells which he said may be mallignant. I had a CT IPV done today for further viewing of the area from which this is coming from near the bladder. I have been getting blood in my urine seen and unseen for almost one year now of and on. The hosptital gave me three jars to pee in over three days. when I did the jars in the morning I put it in the fridge as I was told and latter came back to find there was white cells on the bottom and when I shook it up it looked like bannana juice and a bit milky I have never seen anything like this before. Now is this becasue of the white mallignant cells are in it and so therefore ends up making the urine look milky? I heard from a RN before that this is the reason. I need a second opinion. No I do not have any infections as I have been investigated for any UTIs or any bladder infection which I do not have, and no kidney stone as my kidneys are in great shape. So anyway does the urine end up looking milky when
you leave the urine becasue of the white abnormal cells? Is this true? Please help.
I am almost 39 and female