
Flu-Like Symptoms After Unprotected Sex: Could It Be HIV?
Experiencing flu-like symptoms after unprotected sex can be alarming. Learn the most common causes, when HIV may be relevant, the importance of timing, and when confidential testing may help.
Expert, evidence-based articles on STIs, testing, prevention, and sexual wellbeing. Written by UK sexual health experts.

Experiencing flu-like symptoms after unprotected sex can be alarming. Learn the most common causes, when HIV may be relevant, the importance of timing, and when confidential testing may help.

If your partner has STI symptoms but you feel completely well, testing may still be worth considering. Learn how asymptomatic infections work and when testing may provide reassurance.

STI symptoms can sometimes appear weeks after sexual contact. Learn how incubation periods vary, what delayed symptoms may mean, and when testing provides the most reliable results.

Testicular pain after sex can have several causes, from temporary congestion to infection-related inflammation. Learn when testing may help clarify the cause and provide reassurance.

Bleeding after sex can have several causes, many of which are not related to sexually transmitted infections. Learn when postcoital bleeding may warrant testing and when reassurance is all you need.

If you are worried about HIV after unprotected sex, PEP may help — but time is critical. Learn about the 72-hour window, how PEP works, and where to access it in the UK.

Pelvic pain after sex can have many causes, from friction and dryness to infections and other conditions. Learn what symptoms to look for, when STI testing may help, and when to seek further advice.

Swollen lymph nodes after sex can feel worrying, but most cases are unrelated to STIs. Learn what causes groin gland swelling, which infections to consider, and when confidential testing may help.

Urethritis in men can be caused by STIs or non-specific inflammation. Learn the difference between infectious and non-infectious causes, what symptoms to look for, and when confidential testing may help.
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