I am seeking guidance on my risk for HIV and other STIs and whether repeat testing is indicated. HIV and hepatitis testing in July 2025 was negative. From August–September I had condom-protected vaginal and heterosexual anal intercourse with new partners. In October, I had condom-protected vaginal intercourse and unprotected heterosexual anal intercourse with a partner who tested HIV-negative prior to sex and reported no recent partners. I also had genital-to-genital contact (frottage) with possible minimal penetration. What is my estimated risk for HIV and other STIs, is repeat testing recommended (tests and timing), and how efficient is HIV transmission in these exposure scenarios?