I had protected sexual intercourse on January 28th, 2012. I was bit worried later about the incident. I had a hiv test on 20th Feb and the report I got was hiv-agab which was negative. Again I had a test on 28th day but this time Architect Hiv ag/ab combo which I got negative. Are these tests conclusive for absence of hiv virus. Please kindly provide me more information as I am facing mental stress a lot about this issue. Thanks in advance.