Blood-tinged Phlegm After Oral Sex: Is It a Sign of STDs? - Urology

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Symptoms of blood-tinged sputum the day after oral sex?


Hello Doctor: I engaged in oral sex with a stranger (male performing oral sex on female, no protection, no subsequent intercourse, but there was kissing) two days ago.
The female did not have any cleaning measures before oral sex.
The next day, I experienced slight coughing, thick phlegm (with blood), and a sensation of something stuck in my throat.
Currently, I do not have a fever but feel somewhat fatigued.
Could these be symptoms of a sexually transmitted infection (STI)? What steps should I take for medical consultation and when is the appropriate time for testing? Please clarify!

A Cheng, 20~29 year old female. Ask Date: 2016/02/21

Dr. Xu Weikai reply Urology


A-Cheng: Hello, I recommend seeking medical examination.
Additionally, I suggest that you undergo testing for HIV.
If there are any unclear points, feel free to ask again so we can discuss and research further.
Answers from the internet should only be used as a reference; it is essential to visit a healthcare facility for proper medical care.
This message is from Dr.
Hsu Wei-Kai, Director of the Urology Department at Taitung Hospital, Ministry of Health and Welfare, who cares about your well-being.

Reply Date: 2016/02/21

More Info


Experiencing blood-tinged phlegm after engaging in oral sex can be concerning, and it raises valid questions about potential sexually transmitted infections (STIs). While it is not possible to definitively diagnose an STI based solely on symptoms, there are several factors to consider.

Firstly, oral sex can indeed transmit certain STIs, including but not limited to human immunodeficiency virus (HIV), herpes simplex virus (HSV), gonorrhea, and chlamydia. The risk of transmission can be heightened if there are any cuts, sores, or bleeding gums in the mouth, as these can serve as entry points for pathogens. In your case, the presence of blood in your phlegm could be attributed to several factors, including:
1. Infection: The symptoms you describe, such as coughing, phlegm production, and the presence of blood, may indicate an upper respiratory infection or another type of infection. If the woman you engaged with had an untreated infection, it could potentially be transmitted during oral sex.

2. Gum Disease: If you have a history of gum disease or bleeding gums, this could also contribute to the presence of blood in your phlegm. The irritation and inflammation of the gums can lead to bleeding, especially when combined with the physical act of oral sex.

3. Irritation or Injury: Oral sex can sometimes cause irritation or minor injuries to the throat or mouth, which could lead to bleeding. If you had any pre-existing conditions or injuries, this could exacerbate the situation.

Given your symptoms, it is advisable to seek medical attention. Here are some steps you can take:
- Consult a Healthcare Provider: Schedule an appointment with a healthcare provider, preferably one who specializes in sexual health or infectious diseases. They can perform a thorough examination and take a detailed history of your symptoms and sexual activity.

- Testing for STIs: It is important to get tested for STIs, especially since you engaged in unprotected oral sex. Testing can typically be done a few weeks after potential exposure, but some infections may take longer to become detectable. Your healthcare provider can guide you on the appropriate timing for testing based on your specific situation.

- Monitor Symptoms: Keep track of any additional symptoms that may arise, such as fever, persistent cough, or worsening throat discomfort. This information can be helpful for your healthcare provider in determining the cause of your symptoms.

- Avoid Further Sexual Activity: Until you have been evaluated and tested, it may be wise to refrain from any sexual activity to prevent potential transmission of infections to others.

In conclusion, while blood-tinged phlegm can be alarming, it does not automatically indicate an STI. However, given the circumstances, it is crucial to seek medical advice to rule out any infections and to receive appropriate care. Remember that early detection and treatment are key to managing STIs effectively.

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