first, I'd like to ask if you wore a condom during anal sex? also, your 4th gen duo test is conclusive, you do not have HIV. these tests are extremely accurate. your anxiety is making you not think logically, even though you have read yourself hundreds of threads. if you keep obsessing, seek help for that. sorry for not being able to post the findings and such that you've requested since I'm posting from my cell while I'm at work, but i wanted to try to answer soon as i could to ease your mind.
Thanks laxus2012 for your feedback. I am still believing about HIV2 conclusive result since even HIV DUO test is an antibody test for HIV2, so a 3 months window is not necessary for Hiv2? Also is it fine to take another blood test in 8 days gap or will it affect the accuracy of the test?