dear user about your question i would like to tell you that these symptoms of fishy odour discharge with cloudy and whitish color refer to having urinary tract infection almost fungal infection urinary tract infection may be due to fungal or viral or bacterial infection....so if you found small blisters and itching it suggest viral infection of hsv2 that aquired by sexual contact you need to do urine culture as primary investigative test of fungal or bacterial infection ....fungal infection causes cheesy discharge and fishy odor ...... as in this case you should have antibiotics for treatment ...you need not to be worried ......even if rhere is bacterial infection urine culture and antibiotic sensitivity test will detect simply the way of treatment and selection of the approbriate antibiotic that will give best results with bacteria detected........discuss with your doctor to do urine culture and antibiotic sensitivity test as it will help alot.......you should drink alot of fluids and limit your sexual activity untill treatment completed........wish you healthy life