Many people worry that an unusual vaginal smell means a sexually transmitted infection. A young woman who visited a sexual health clinic learned that the cause can be different, and often preventable.

She came in concerned about a strong, fishy odor and discharge after having sex without a condom. She had recently ended a period of celibacy and had sex with two men within a short time. She feared an STI and asked for testing.

Her STI test was clear. The nurse explained that bacterial vaginosis, often called BV, is not an STI, but it can be triggered by sex without a condom. A fishy smell is a common sign. The woman also said she had experienced BV before and admitted that poor genital hygiene had played a role.

The nurse advised regular gentle washing of the external genital area, including after sex, but warned against using soap or shower gel. Harsh or perfumed products can disrupt the natural balance and lead to irritation or thrush. She also agreed that urinating after sex can help.

The key message was simple: new symptoms deserve medical checking, and basic care habits matter. When tests rule out an STI, BV may still explain a change in odor, especially after condom-free sex.

If you noticed a sudden change like this, would you feel comfortable seeking advice right away?