Welcome to the STD forum. I see that you have had some extensive discussions on the HIV international forum and the HIV community forum. It seems you are having difficulty accepting the reasoned judgments you received that you don't have HIV. I have not yet read this question, but reponding to the title you selected -- "Can i consider my tests conclusive / final?" -- if you had negative tests for HIV at least 6 weeks after your last possible exposure to HIV, then for sure you were not infected and indeed your tests are conclusive.
Now I have read your question. A negative duo test (i.e. a combination test for both HIV antibody and p24 antigen) is 100% reliable if done 4 weeks or more after exposure. Your test results prove you were not infected. You do not need any additional testing.
Although it is true that you can find many online sources that will advise a need for later testing -- e.g. 3 months or even longer -- with modern HIV antibody tests, it virtually never takes more than 6-8 weeks. Further, those issues apply only to the HIV antibody tests. There is no debate about the duo/combo test; for sure a negative result at 4 weeks proves no HIV infection is present.
Here is a thread that discusses the reasons for the widely variable advice you can find about the time required for reliable HIV testing:
http://www.medhelp.org/posts/HIV-Prevention/-A-Question-on-Testing/show/1347755
Unlike some of your other threads, there won't be any follow-up comments or discussion. Accept the truth that you do not have HIV. There is no information you can provide that could possibly change my opinion or advice.
Regards-- HHH, MD