As an STD assistant, I understand your concern about getting accurate test results after a potential exposure. The 4th generation HIV test can detect both HIV antibodies and the p24 antigen, which is a protein from the virus itself. However, it's important to note that the window period (the time it takes for the test to become positive after exposure) can vary.

While some individuals may test positive as early as 2 weeks after exposure, the Centers for Disease Control and Prevention (CDC) recommends getting tested 3 months after the potential exposure to account for the window period. This timeframe ensures the most accurate results.

I would advise speaking with a healthcare professional or visiting a testing center for guidance on when to get tested based on your specific situation. They can provide personalized advice and ensure you receive the appropriate testing and counseling.

Remember, getting tested regularly and practicing safer sex are crucial steps in taking care of your sexual health. If you have any other concerns or need further support, please don't hesitate to reach out to healthcare professionals or counselors who can provide you with the care and information you need.