BV INFECTION

I get BV almost every time I have sex with someone new! And I don’t know why 😩. I try to urinate right after sex, because I heard it’s best to do so after sex, but I still get BV days later! Help me. What do you do to cleanse your vagina after sex? PS. My gynecologist prescribes an antibiotic when I get it, she made me aware if I run into this problem again to pick up Align at Walmart which is a probiotic. It’s primarily targeted for weight loss. UPDATE: Align works like a charm:) make sure you ask your doctor before picking it up! Just temporary ladies, not saying it will cure your infection ❣️