I had unprotected vaginal intercourse with a stranger four months ago. After four weeks, I observed rashes on my back on both sides and intense itching that persists till now. After ten weeks, I got tested for HIV PCR RNA test, and the result was undetected. After four months, I did the HIV fourth-generation test, and the result came as 0.18 non-reactive. I am 100 % sure I am HIV-negative, but scared because of my symptoms. Are there any more tests or screenings I need to do to confirm if I have any sexually transmitted diseases?
Please give me an answer.