Mark,
I'd bet it isn't bladder cancer at your age as well. Does sound like you have gross and microscopic hematuria, which in your case is more likely a kidney stone problem.
The number of potential causes for hematuria are many. Happily, most of the causes do not represent serious or life threatening disease. Some of the common, less serious reasons for hematuria include kidney stones and urinary tract infections. The most common reason for hematuria in a man 50 years of age or older is benign prostate enlargement. A small percentage of the population normally has microscopic hemuturia with no apparent cause. Voiding problems, trauma, and excessive exercise ("jogger's hematuria") may also cause blood in the urine.
More serious reasons for hematuria include bladder tumors, kidney tumors, and kidney obstruction. It is reasons like these which make it necessary to properly and thoroughly evaluate all hematuria.
www.duj.com/hematuria.html
However, if you can't be convinced otherwise, get a cystoscopy (a fiber-optic probe snaked up through your penis into your bladder so the urologist can look around - sounds worse than it is!).