Bacterial Vaginosis ??

hiya i have been given metrodronizole and i have taken that for a week and everything seemed to go away and then when i sleep with my bf who i have been with for a year and a half it has come back again - i have been tested for any std and it all came back fine - why am i getting this back again as i have been told that it cant be passed through parteners ?
i have stopped using perfumed soap etc. and my diet is fine
please help me as its really getting me down ?
what can i do to stop this ?
thanxs xxxx

My doctor told me years ago that oral sex cause this and to try to avoid - just wash up well after intercourse him too!

Have you been having oral sex performed on you?
Often that is the cause of
try using a spot on cream and make sure you have a shower b4 sleeping with him- been there done that, u might also need anoughther stronger dose of meds.
judging by the name of your medicine it was against fungus, not against bacteria. so it is very common if u get treatment against fungus your florae there changes and then if your bf didn't wash his willy very well before sex u could contract some bacteria from him. it doesn't need to be an std necesserelly. but anyway, u need to tell this to doctor, they make florae test and find out. but i guess it is this common bacteria gardenellia or whatever it is spelled. it usually comes after fungus treatment. it is also risk after u get antibiotic treatment against this bacteria u will get your candida (yeast infection, against which u were treated njow) back. this is the cycle of life. i strongly suggest u stop having sex with your guy at the time while u re taking medicines or use condom and the when u start make him wash his place BEFORE sex and after sex. u should wash your place BEFORE AND AFTER every time u have intercourse
all the above and also wearing tights, nylon knickers and not rinsing your bath out properly when you clean it can cause this. Your flora is a bit out of whack is all. get back to your doctoer for some more meds, it can take a while...
my own experience
here is the list of natural remedies that may help you all the best, in mean time always keep hygiene