Hello there, I am dr.milan an infectious disease specialist answering your question. You should take nitrofurantoin for 1 week. Than with reducing dose after urine is clear by microscopic examination or by culture report. You need to go for culture & sensitivity test by a reliable Microbiology lab and by a qualified doctor Microbiologist. Because you have already taken drugs for 1 week still it is not resolving than there need to be appropriate reporting of culture. Poor hygiene leads to infection anywhere, but here any anatomical abnormality may leads to repeated urinary infection so you should go for further evaluation of urinary system if you have repeated infections. I suggest you to go for culture of urine sample by suggested lab and than follow the sensitivity pattern of that report according to your physician guidance. Hope i have given appropriate guidance to you. if you have any query you can consult me anytime. Give me star rating, helpful vote & thank you according to your satisfaction level. Thanking you.