Why do I have recurring bouts with Bacterial Vaginosis?

I have been diagnosis with BV for about the fourth time now. I haven't had sex in two years, my personal hygiene is excellent, and I don't wear tight fitting pants. Is it my diet? Why do I keep getting BV? Am HIV negative and STDs free. Am pretty much a healthy person.
Bacterial Vaginosis (BV) is a very common infection and many women get this infection as some point in their life. BV occurs when the bacteria becomes unbalanced in the vagina. Although BV is treatable and curable, the symptoms are usually unpleasant. If you have bacterial vaginosis at least 4 times a year, then this is called recurring bacterial vaginosis infections. It is important to see your doctor if you are having recurring BV infections. Luckily, there are a few things that you can do to stop recurring bacterial vaginosis infections. Things You’ll Need:Health evaluation
Physical examination
Pelvic exam
Lab tests
Appropriate treatment method (antibiotics, hormonal therapy, etc.)
RepHresh vaginal gel

Step1 Schedule an appointment with your doctor. In order to stop recurring bacterial vaginosis infections, it is important to visit your doctor in order to find out the specific reason for the infections. There are different reasons why a woman may get bacterial vaginosis, such as hormonal imbalances due to pregnancy, menopause and menstruation, using feminine hygiene products, having multiple sexual partners (or a new sex partner), stress, a weakened immune system from an illness such as diabetes or HIV, douching too often and using scented panty liners, pads or tampons.
Step2 Discuss the test results and treatment options with your doctor. Your doctor informs you of your test results and lets you know how you can best treat the recurring bacterial vaginosis infections. Your doctor may first prescribe you an oral antibiotic (metronidazole or clindamycin) or a vaginal cream or gel to cure the BV infection. He then proceeds to treat the underlying cause for the recurring bacterial vaginosis infections which may involve additional medications, hormonal therapy, or suggesting certain changes to your diet or lifestyle behavior. Step3 Use RepHresh vaginal gel to help prevent recurring BV infections. RepHresh is an over-the-counter product that helps to keep the pH level balanced in the vagina, which reduces your chances of getting recurring bacterial vaginosis infections. You can use this product once every 3 days at anytime of the day (especially after having your menstrual cycle or having sexual intercourse). Visit rephresh.com for more information about this product. Step4 Follow a well-balanced diet plan. Be sure to eat healthy food and nutritional meals everyday. Try to avoid eating sugary food, soy sauce, cheese and chocolate and refrain from drinking soda, coffee or alcohol, because these types of food products puts you at a higher risk of developing recurring bacterial vaginosis infections.
Step5 Clean your vaginal area each day. Try taking showers instead of baths and be sure to properly clean the vaginal area with soap and water everyday, to help stop bacterial vaginosis infections.