Hi doc, I had oral sex with a confirmed HiV positive guy. I remember giving him an oral sex (around twice or thrice) and probably swallowed some of his semen. What are the chances that i will get infected by doing that? i do remember not having any mouth sore or cuts on my mouth when i did that. if i did ingested some of his semen, does it mean the virus went into my blood system already and probably infected me? please let me know. thanks