Can I Get an STD from My Boyfriend if He Tested Negative? - Urology

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If the male partner does not have any sexually transmitted infections (STIs), can the female partner still have one?


My boyfriend admitted that he has been to a nightclub and been with other women, but he said he was tested and the results showed he does not have any sexually transmitted infections (STIs).
We have had unprotected sex several times since then.
If he truly does not have any STIs (assuming he really doesn't), is my risk of infection low? Is it possible that he doesn't have an infection but could still transmit something to me?

Niming, 20~29 year old female. Ask Date: 2014/02/24

Dr. Li Yilun reply Urology


Sexually transmitted infections (STIs) are caused by viruses or bacteria that are transmitted through sexual activity.
Even in the absence of pathogens, transmission can occur, so it is advisable to practice safe sex before marriage by using condoms.
Additionally, all tests have a window period during which infections may not be detectable.

Reply Date: 2014/02/24

More Info


When it comes to sexually transmitted diseases (STDs), understanding the risks involved is crucial, especially in relationships where one partner has had sexual encounters with others. Your question about whether you can contract an STD from your boyfriend, who has tested negative, is a common concern and requires a nuanced understanding of STDs and their transmission.

Firstly, it’s important to recognize that a negative test result for STDs is a strong indicator that your boyfriend does not currently have an infection. However, the accuracy of STD tests can depend on several factors, including the timing of the test in relation to potential exposure. Many STDs have a "window period," which is the time after exposure during which the infection may not be detectable. For example, HIV can take up to three months to show up on a test, while other infections like gonorrhea or chlamydia may be detectable sooner. Therefore, if your boyfriend was tested shortly after his sexual encounters, there is a possibility that he could have been infected but the test did not yet reflect that.

Moreover, even if he tested negative, there are still risks involved in unprotected sexual activity. Some STDs can be asymptomatic, meaning that an infected person may not show any signs or symptoms but can still transmit the infection to their partner. This includes infections like chlamydia, gonorrhea, and even HIV. Therefore, while the chances of contracting an STD from him may be lower if he is indeed negative, it is not zero.

As for the possibility of him transmitting an infection to you, it is indeed possible for someone to be a carrier of an STD without showing symptoms. If he had an STD that was not detected during testing, he could potentially pass it on to you. Additionally, if you have had sexual encounters with others, you could also be at risk of transmitting an infection to him, even if you are not currently aware of it.

To mitigate these risks, it is advisable to engage in safer sex practices, such as using condoms, which can significantly reduce the likelihood of STD transmission. Regular testing for both partners is also essential, especially if there are multiple sexual partners involved. Open communication about sexual health, testing history, and any potential risks is vital in maintaining a healthy relationship.

If you have concerns about your own sexual health or potential exposure to STDs, it is recommended to get tested yourself. Many clinics offer confidential testing for a variety of STDs, and understanding your own status can help you make informed decisions about your sexual health and relationship.

In summary, while the risk of contracting an STD from your boyfriend may be lower if he has tested negative, it is not entirely eliminated. Regular testing, open communication, and practicing safe sex are key components in protecting both your health and that of your partner. If you have any symptoms or concerns, it is best to consult a healthcare professional for personalized advice and testing.

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