Thought I'd share my experience with blood in urine. Over the past 15-20 years I've had several UTIs, most of them treated with Cipro. This past January I saw blood in the urine (I usually end up seeing blood when I have a UTI), went to the doctor's and was prescribed Cipro. Went back 10 days later and there was still microscopic blood. Went back 2 weeks later.... same thing.
So now, scared like hell, I made an appointment with a urologist. Though I have severe health anxiety, the urologist managed to calm me down. She struck me as a very competent urologist, nothing fake about her, really seems compassionate and understanding. Anyway, she told me that in approximately 80% of cases, blood in urine is not due to a serious medical condition such as cancer. She also said that bladder cancer is quite treatable, etc. etc. Of course that only helped so much, 'cause who would want to hear the big "C" word??
I had a cystoscopy. She asked me if I wanted to watch and I quickly said, "NO!" - afraid of what I might see. Within what seemed seconds she said, "Aha, yep, it's cystitis cystica and trigonitis... pretty bad too". Never heard of that before. So she explained. Trigonitis is a chronic inflammation of the bladder; Cystitis cystica is similar to a chronic infection but when they test for infection, nothing shows up. Both seem to be caused by infections that were not treated completely. The bacteria ends up hiding in the bladder wall causing inflammation.
She put me on a low-dose antibiotic, one every night before going to bed. I was given a bladder diet, very similar to the one they use with Interstitial cystitis. Some urologists believe that IC and C. cystica are the same thing, but my urologist disagrees. She told me they look different and the exact cause of IC is still pretty much a mystery. She said to check which foods on my "Do not eat" list cause me irritation, and the worst one for me is coffee. If I drink more then 2 cups of coffee a day for a couple of days and then I check my urine using the dipstick, it will show microscopic blood :-( Many doctors believe the conditions are chronic and you have periods when they improve, but you never get rid of them completely. My urologist disagrees... as long as you stay away from the offending foods (many of them!) and drink plenty of plain water, you should be ok.
Going back tomorrow for a second cystoscopy to see if the inflammation has improved; I hope so! The urologist also told me that it is usually the GPs who grow very concerned when there is blood in the urine. For urologists, she said, once the cancer diagnosis is ruled out, they do not concern themselves with the blood. I know, easier said than done for us... when we see blood we freak out (well, I do).
My tests included urinalysis, urine cytology, cystoscopy, urodynamic studies. I live in the USA.
I hope I helped someone who is experiencing anxiety over the condition :-)