I am around 32 years old and had sex on the 13th of the last month with an unknown girl; even though she is not a sex worker, she had multiple partners. I was involved in foreplay; I kissed her lips, sucked her breasts, and rubbed her genitals. She gave me oral sex for around half a minute without protection and rubbed my penis on her buttocks. However, there was no vaginal and anal insertion. I am unsure about her HIV status, even though she said she is not. After two days, I consulted a sexologist and took an HIV tri-dot test and other STD tests, which came negative. And then, after 20 days, I took the HIV-1 RNA PCR test, which was negative. Is there anything that indicates I am HIV positive? Kindly help.