Hi I just wanted advise.iv previously had breast cancer in sep 2019.i finished all my treatments in 2021. Iv recently been to drs about sciatica and bad back.they checked my urine 3 dif occasions and sent them to be checked in hospital.they all come back as traces of blood and no infection.iv now been ref to urologist and got to go for scan next week.hoping I dont have bad luck twice. Can anyone tell me what there symptoms have been for kidney or bladder cancer.