BV 🤧

I’ve been getting BV and yeast infections like crazy back to back. I’ve tried both the pills and cream and it just can’t seem to stay away. My doctor was telling me it could be a number of things but one of the things she mentioned was my boyfriend ejaculating in me every time we have sex. My friend suggested boric acid and I was wondering could I use boric acid while I actually have bv/yeast l? Also is there anything you guys recommend to get rid of it and keep it away?