I got a free hiv test today and it came back negative after a half hour wait. i thought they were doing an rapid hiv oral swab test but they took my blood sample because they said that they stopped doing the oral swab tests for accuracy reasons. i asked the counselor about the test done and was told that this test looked for antigens as opposed to antibodies and it came back negative. how conclusive is this test? should i get re-tested? i got this test done to find peace of mind from 2 encounters a few years ago that put me on the high risk category. The first being a protected anal sex with someone with unknown hiv status, where i was on the receiving end. although condom was used, we used baby oil as lubricant. the second was when i performed protected oral sex on someone with unknown hiv status. more recent exposures ( over the last year) were all hand-to-genital stimulations that resulted to ejaculations on my hands. i want to take the negative results to heart and move on. please advise.