i started on flagyl (metronidazole) tablets on tuesday for an infection but my symptoms arent any better yet. Just wondered if anyone else has experince of how soon to expect the antibiotic to work? My swabs came back negative for chlamidia and whatever other std the dr was checking for so I'm assuming I just have what is called bacterial vaginosis. Not itchy or burny just lots of watery discharge which doesnt smell good and quite different to my usual.