I have the same, can't get rid of UTI which put me in hospital with sepsis in November due to no symptoms leading up to total loss of ability to do anything. I am now on my third antibiotic in a row (I test at home with same strips the doctors use, from online) and am considering trying Methanemine one a day, or fosamin once a week. (sp) They have been successful for others on this blog. Macrobid didn't help me several times over the past year. I am now on cephalex 500 mg 2xday. Appointment Thursday for discussing my above options. Good luck but count on a long period of final diagnosis.