I have also shared the same problem that you have and I will try those solutions. However, I firmly believe that your sexual partner must also be treated too. I realize that he does not have any symptoms but he does have the same problem.
It does not necessary have to be reintroduced just by intercourse. You can still contact this problem again just by rubbing against each other with your genitals. I know this to be true since it has happened to me on more than one occasion.
I also believe that BV infections are rampant in society but because women are embarrassed by its symptoms or are not bothered as much as others with symptoms, this does not get the attention it deserves. Men are carriers and they do not realize it. They have no symptoms and I have no idea of why this is.