I had sexual intercourse with 2 partners when I was in teens and now I am 25 years old got married 8 months ago and I have chronic uti from past 1 yr and I am antibiotics for 5 days every months and I have gone through all the test including vdrl and hiv but they negetive.I have ecoil species found in vaginal cultural and pus cells in urine of 5-6 before and now it is 3-4.Is it std's and I am tensed that why it is taking such a long time to cure.Please help me out.