My concern is that I engaged in unprotected oral sex with a CSW (Community Sex Worker) a few months ago. Since then, I have experienced recurring lymphadenopathy up to the present date. I underwent an HIV (Human Immunodeficiency Virus) TRI-DOT test after a month, which returned a negative result. Additionally, an HIV ELISA (enzyme-linked immunosorbent assay) test was performed within the same month, ten days after the incident, yielding a negative result. Subsequently, in the first week of the previous month, I underwent an HIV-1 RNA (ribonucleic acid) PCR (polymerase chain reaction) test, which also came back negative. Both HIV-2 RNA PCR and Western blot tests were conducted in the same month, both yielding negative results. Toward the end of that month, I opted for an HIV duo test, which again returned a negative result. In the current month, I underwent a Western blot test, and once more, it showed a negative result. Should I remain concerned about the possibility of HIV, and do you recommend any further testing? Kindly help.