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STDs & Sexual Health

Does BV Mean Your Partner is Cheating?

Faith Coleman

Medically reviewed by Faith Coleman, University of New Mexico School of Medicine on August 21st, 2026.

Bacterial vaginosis (BV) is an imbalance of the vagina's natural bacteria, causing a thin discharge and fishy odor. It does not indicate whether your partner is or is not cheating on you. BV is caused by an overgrowth of naturally occurring bacteria in the vagina; it is not a sexually transmitted infection. While sexual activity can disrupt the vaginal pH balance and increase BV risk, the condition affects up to 29% of females aged 14 to 49 at any given time. Non-sexual factors like douching, antibiotics, hormonal changes, and even stress can trigger BV episodes. The condition can occur in women who have never been sexually active and in monogamous sexual relationships. If a woman is experiencing symptoms like unusual vaginal discharge or odor, she should see her healthcare provider.

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