Sick After Sex
What are the chances of getting sick after sex?
Having sex can be fun and exciting, but it's smart to think about the chance of getting a sexually transmitted infection (STI) from a partner. This tool helps you estimate the risk of contracting common STIs like gonorrhea, syphilis, HIV, or genital herpes from a single encounter.
The estimate is based on real-world data and a number of factors that can increase or decrease your risk. Select the options that best match your situation to see a personalized result.
Disclaimer: This is an estimate based on population data, not a medical diagnosis. For personal health advice, please consult a healthcare professional.
Your Personalized Risk Estimate
First, where is your sexual partner sexually active? (This sets the baseline risk for that location.)
What best describes the sexual encounter?
Was a condom used? (Select No if the condom broke or slipped off)
Is your partner on treatment for an STI? (For example, HIV medication making them undetectable/untransmittable)
Are you taking DoxyPEP? (DoxyPEP is post-exposure medication that reduces risk for bacterial STIs.)
Your Estimated Risk
What To Do Next
Regardless of the result, if you are sexually active, the best steps are to:
- Get Tested: Regular STI testing is the only way to know your status for sure.
- Talk to Your Partner: Open communication about sexual health is key to staying safe.
- Consult a Doctor: A healthcare provider can give you confidential advice, testing, and treatment.
See the data page for all of the details on how these risks are calculated.
Initially created by Grok 4 and Gemini.