I had vaginal sex with a sex worker without condom 15 days ago. Next day i took her for hiv antibody test and it was negative. I also tested negative for HIV. then i started taking PEP on doctor's advice from that day. i got HIV-1 rna pcr qualitative test done on 11th day after exposure and it was negative. then I got HIV-1 RNA PCR quantitative blood test done on 13th day after exposure and it was also negative. in fact as per the lab, test could detect even less than 20 copies/ml and as per my report, no HIV-1 RNA virus was detected in my blood. I am still continuing PEP. today is 15th day after exposure i heard pep can affect the hiv-1 rna test also. is that true? but if i was really infected with HIV, shouldn't the HIV-1 RNA PCR test have detected atleast 1 or 2 copies of HIV-1 virus? please clarify. i want to stop pep based on your clarification as it can cause serious side effects. Appreciate your help