Yeast Infection :: Ongoing Vaginal Infections

For nearly a year now, I have battled with ongoing vaginal infections. I started running into these problems a couple weeks after I first became sexually active (which was a little over a year ago). My boyfriend and I are monogamous, and he is the only person I have slept with. However, I keep getting infections, and it doesn't matter whether or not we use a condom. I have gone to the gynecologist countless times, and for the longest period all my cultures proved negative for STD's and infections. Only twice has it turned up positive for a yeast infection. To get into the nit and gritty of things, I have had a thick, yellow discharge with a foul smelling odor (almost like vinegar) and both internal and external (itchy) irritation. It also hurts to have sex, almost like a stinging pain (sorry about all the gross details).

I have done everything to try to ease my symptoms. I have taken many antibiotics throughout the past year to treat my symptoms and nothing has helped, and even if something does help, my symptoms return fairly quickly. My partner and I have been abstaining from sex for over a month now, but medications still will not do the trick. I have switched out my soaps to all natural ones, with no fragrances. I haven't worn synthetic underwear or thongs for a month. I have also been taking probiotics for about two months. Lastly, I have attempted the "candida diet" with little success, because my low blood sugar levels led me to feel extremely faint, and I quickly needed to stop the diet.