I haven't had the test yet, but am paranoid, cause I think antibiotics are evil (not in all circumstances, but I just don't like the things). But in preparation for the test, I stick a clove of garlic up my yoni every few days. It doesn't burn me, so I cut slits in it so that I get a higher dose. Supposedly this will cure a yeast infection and help with gbs. So I'm hoping to prevent a +. So maybe you could try the garlic too. Just do it at night, cause 1. it will fall out if you walk around much and 2. there is a vaginal mouth connection, so you will taste garlic a minute or two after you stick it in, so you can sleep through the garlic taste.