Hello, I have one detailed HIV question. In May 2022 I (M26) received oral sex (insertive partner) from a sex worker. I know this is very low risk, but I developed strong HIV anxiety. After 7 months I tested negative on a 4th-gen HIV Ag/Ab CLIA test and also negative on an OraQuick oral fluid test. I am not sure if I took biotin around that time; if I did, it was only a normal ~200 μg dose. Could such a small amount (or none) affect the accuracy of a 4th-gen test taken 7 months after exposure, especially the antibody part, or is that only an issue during the early p24 stage? Is it still realistically possible that I could have HIV despite those tests? Also, today at work I had a small cut on my finger with blood dripping, and I accidentally touched a client’s forehead, leaving some of my blood on his intact skin before i wiped it (maybe a small non-bleeding pimple). Is there any HIV transmission risk for him from this contact? Thank you.