this is my 2 post my 1st was from costa rica about a risky episode and 2 hiv1. & 2 test first at 28 second 56 days both negative but I read the first post of theforum and got worried because I had anal sex without protection with unknown person and I don't know if I have to wait 12weeks because the kind of risk I took, it was my 1st time anal unprotected sex. Please waiting for your answer
You have certainly put yourself at considerable risk. The risk of receptive anal sex is estimated at 3% from a single encounter, and the only test that would be conclusive at those periods of time would be the Duo. The ones you had, I believe they are tha antibody tests for HV1 and HIV2, and they are not fully conclusive until after 12 weeks. However the fact that you have had those 2 consecutive negative tests is highly reassuring and a good sign, that you will hopefully be ok. In the future, please, always use condoms when having anal sex and do not put yourself at risk.
All the best and enjoy your beautiful country of Costa Rica!