Hello, there seems to be some confusion about men transmitting bv/yeast. Men dont necessarily get symptoms like women but they definitely can have them and transmit them sexually to you. Please see this study below where men infected with gardnerella, prevotella, finegoldia, and enterococcus are deemed healthy. These things should neither exist on the penis nor the vagina ans if you're having symptoms and only treat yourself and not your partner you will continuously be reinfected.

If your doctor is saying anything about how men don't need to be treated but you keep getting reinfected, have him tested, treat him, etc. If he refuses, do an experiment, stop having sex, and see if you "recur". "Recur" is often euphemism for boyfriend reinfected you.

If you have long term colonization this is a separate problem, both of you get treated and then do immune boosting stuff. His health affects your health. His sperm determines your kids immunity.