And greetings to you too!!
It is way too early to know if you have bladder cancer. Most of us presented with blood in the urine, and/or symptoms like a UTI, or no symptoms at all. Back pain and nausea and not usually typical symptoms (if there even is such a thing) of bladder cancer.
Many things can cause microscopic or visible urinary blood, and most are NOT bladder cancer. In many cases, the cause is never found. This is why so many physicians do not even do a test for urinary blood routinely. It is possible that your symptoms might be related to the renal cyst. But please remember that we are not doctors and our guesses are as good as yours.
After the urologist does a cystoscopic exam he/she will have a better idea of what you might or might not be facing. If there is suspicion of a bladder tumor you will be scheduled for a TURB (transurethral resection of the bladder) which is sort of cystoscopy under mild general anesthesia. As much of any tumor as can will be removed and it and samples of the surrounding tissue will be sent to a pathology lab for analysis. ONLY AFTER THE RESULTS OF THE PATH EXAM ARE BACK (and this can take a week or so) would you have a firm diagnosis...is it cancer? what grade and stage?
At this point all we know is that you have some unexplained symptoms and your doctors are doing everything they should to come up with a possible diagnosis, which may very well NOT be bladder cancer.
Good luck!!
Sara Anne