When I urinate, my butt bleeds and stinks. I usually have diarrhea. I eat fast food. I take blood pressure medicine. I have raw skin in between my legs. I get ophthalmic headaches. My doctor is concerned about my kidneys. I'm afraid to tell him about my anus. I've already had the finger rectal exam. I drink a lot of soda. The doctor said to drink more water as soda my have affected the kidney test results. I'm a guy in my late fifties.