Thanks for posting,
From your description you are not having prostate cancer
(your age also keeps you out of that possibility) and your symptoms do not mean you have prostate cancer.
You need to get the lump examined by a doctor as I can not tell for sure what the bump is except I can see and examine it. You might be having an external hemorrhoid
or an anal polyp. You also seem to have a urinary tract
problem. You also need to get your urine examined for UTI.
Hope this helps