Hello after a recent possible exposure. I went to go get tested at 35 days (5 weeks) with the 4th generation duo test and it came back negative, at 56 days (8 weeks) I tested with another 4th generation combo test this time with reflexes and it came back negative. Also at 9 weeks I got a rapid hiv test done and it also came back negative. What are my chances of being negative at 9 weeks turning positive at 12 weeks