Blood in the urine: In most cases, blood in the urine is the first sign of bladder cancer. Sometimes there is enough blood to change the color of the urine. Or the urine may be very pale yellow-red or, less often, darker red. In other cases, the color of the urine is normal but small amounts of blood can be found by urine tests that were done because of other symptoms or as part of a check-up.
But blood in the urine does not mean you have bladder cancer. Much more often it is caused by other things, such as infection, benign tumors, or stones in the kidney or bladder.
Changes in bladder habits: Having to urinate more often, feeling pain or burning when going, or feeling as if you need to go right away even when the bladder is not full can be symptoms of bladder cancer. But these problems are more often caused by something other than cancer. Bladder cancers that have grown large enough may cause more symptoms, such as lower back pain or being unable to urinate.
*Information from the American Cancer Society.