Usually within 5-10 days. Most persons don't have any symptoms. It is especially rare in males. Although rare in males, if it does occur, symptoms will also include a mild itching or burning with urination or an unusual discharge from the penis. Physical examination, viewing under a microscope and a culture of vaginal secretions are necessary to diagnose.
Treatment is necessary only if the symptoms are unpleasant and bothersome.
Yogurt capsules are available at any health food store. This method can be done safely by pregnant women too. The yogurt capsules replace the lactobacillus destroyed by the overgrowth of the Gardnerella. If your symptoms persist, a stronger treatment may be necessary. The most effective prescription treatment for Gardnerella is metronidazole.