Urinary tract infection

Every time I go to the urologist I have a urinary tract infection. Input on a med and then feel better. When I get the burning and frequency again,I'm back on the medicine. Have been on this antibiotic for a week and went to Dr today. She said I still have an infection so was sending it away for a culture. This has happened to me many times and the culture comes back clear. Anyone hear of harmony d nanose urinary tract and bladder cleanse? Dr also suggested azo urinary probiotic. Anyone ever used these products. When I feel better I don't go back to have my urine checked, so maybe I always have a UTI

If you are prone to urinary tract infections you should be on D Mannose on a daily basis for prevention . It has been working for me for a long time . But if your culture comes back clear , it may be a yeast infection , it has many of the same symptoms . You can just buy over the counter treatment for that , it works very well . 

I take 1 D Mannose pill each day.   Do you take more?    I also take Azo to prevent yeast infections.    I should have results of the culture by end of week.      Thank you for your response

I take D Mannose powder , one teaspoon in water 3 times daily . Azo is really a painkiller when you have a uti .