If i had bladder cancer in the past and now have blood in my urine, do i need to see a doctor right away?

Yes: Any patient with a history of bladder cancer should undergo routine follow-up indefinitely as bladder cancer may recur. If a patient with bladder cancer has bloodu urine, he/she should see a urologist as soon as possible. The bleeding may be due to a number things including, but not limited to: bladder cancer, ureteral cancer, kidney cancer, renal pelvic cancer, kidney stones, and a uti.

Yes: Given the stated conditions, here is no doubt that you should be examined by a urologist as soon as possible.