Hello I've been passing blood in my urine for 4 weeks now been to doctors had a course of antibiotics for a week after that still no better feeling sluggish sent me for a coloscopy camera up said today there's a blockage can't rule out bladder cancer but said could still be infection what I'm confused about his why they never gave me another course of antibiotics and said will see me in 6 to 8 weeks also waiting on a ct scan on liver I thought if cancer is suspected it would be 2 week referral for another coloscopy.