I last had unprotected sex (insertive - I am a gay male) around May 18, 2019. I posted previously on here about being on PreP and how this would have possibly delayed results. I stopped taking my PreP on June 1, 2019 and waited the full 28 days until July 5, 2019 and was tested w/ a 4th generation duo - result was negative. I know this is not 100% accurate.
After this result, I immediately began retaking my PreP and did not have sex. I got retested on September 22, 2019 (while on PreP) and the result was again negative. Can I safely assume I am HIV negative?