Hello,
Welcome to our forum and thank you for your post.
Firstly I would like to say that receiving oral sex would have not put you at risk of HIV infection, and therefore there would be no need for you to get tested. Your negative HIV test at 13 weeks is final and fully conclusive, as all HIV tests are so after 12 weeks. You are HIV negative without any doubt. The test conclusive at 4 weeks is the Duo test of 4th generation.
Kind regards,
Dr José
Hi again,
One more question, I've been reading through the threads and noticed you have said some testing is conclusive at the 1 month mark for HIV? I always thought HIV testing took 3 months to show up? I'm in Australia and not sure what type of testing I had done.