hi, after a year of suffering i finally found out what was causing my frequent urination. i got it when i was 19 and now im 20 years old. during those early symptoms of tingling, burning during urination and frequent urination, i was given antibiotics that was suppose to cure whatever it was causing it. well it didnt, and i suffered a lot from it. the antibiotics i took were azithromycin, oflox, cipro, and last doxy. all of them for 1 weeks 2 a days except for the azithromycin which was taken only once of 1g i believe. now after taking all this antibiotics, i still had frequent urination which was really crazy to the point i was thinking of killing myself. my quality of life was certainly diminished and took everything away from me. doctors now said i dont have any infection what soever since they said i took all this antibiotics already. i had everything done from ultrasound, prostate check up twice, all of it.. except the cystoscopy which i would not even consider. then after months and months i couldnt take it anymore and had the cystoscopy and the doctor found that i had urethritis! my urethra was infected he said and that my bladder and kidney are sore and tightened from all the urination ive been having. to my relief i was very happy that they have finally found out what was causing my frequent urination. now the doc gave me 3 weeks of doxy for it.. now my question is will the 3 weeks of doxy work if i already had them before for 1 week which didnt work? please reply i would appreciate any help. thank you!