Dear doctor, I am extremely nervous after the gay sex. I am worried his pre-cum on his finger inserting into my anus and there might be unknown injuries. I took the HIV RNA TEST to check the virus itself 9 days after the sex. The technology of RNA won't report if viral load below 50copies per ml. I heard some academic papers said the virus replicates very very fast after the infection and it is easy to find viral load above the threshold. Questions: (1) how dangerous my sex (pre-cum infection) is? (2) for a young and immune heathy man, is it possible to find the viral load above 50copies per 9 days after the sex? By the way, the antibody test 9 days was negative with 3rd generation test method. I had no symptoms. Thank you for giving any professional advice.