Having recurrent uti from 2014 it continues till 2017 each culture report positive for e.coli.then taken lots of ayurvedic products and probiotics. It appeared again in december 2020 and from then culture comes up sterile but have blood in urine two times. Then doc. Pit me on prophylaxis dose of nitrofurantoin 100 Mr. for three months .but still feels burning some time and what should be done to not have uti again. I am 42 years old and done with each and every test. Pap smear, urinary t.b. ,cancer ultrasound kub, voiding time, uroflometry, blood sugar, ct urography. Every thing is fine. But still not comfortable down there. Have two kids younger one is 12. Both by cesarean.