Yes, there is a distinct possibility your initial rapid test was falsely reactive. There is no way to reduce the risk of HIV transmission to zero after an exposure occurs. The receptive partner is always at greater risk than the insertive partner for all types of penetrative sex. First, some STIs like syphilis and herpes cause ulcers, or sores, to develop in the genital area or mouth. I'm not finding my help on the web as I've found mostly outdated articles or answers that are too general. Frascino Hi, My advice remains the same. We are all rooting for you! And the first way seems like the whole world would die before long. International Journal of Epidemiology. Vaginal conditions such as bacterial vaginosis, dryness and menstruation also alter risk. These numbers are challenging to calculate and should therefore be considered rough estimates do not represent the risk of transmission from all exposures to HIV represent the average risk of transmission in the absence of biological factors that can increase risk such as STIs and a high viral load are most relevant to people in stable monogamous serodiscordant relationships These numbers may seem low but HIV transmission can occur after a single exposure the risk may be much higher if certain biological risk factors, such as STIs or a high viral load, are present as more exposures to HIV occur, the overall risk of transmission increases most HIV transmissions in Canada occur through unprotected anal and vaginal sex There are several ways of reducing the risk of HIV transmission from an exposure, such as post-exposure prophylaxis PEP , using antiretroviral treatment to reduce viral load , circumcision, treatment for STIs and vaginal conditions, or engaging in lower-risk activities. Your doctor or healthcare worker will advise you on whether you could take PEP. I know you said getting oral is a extremely low risk theoretical under extenuating circumstances but want to make sure this would not make you change your mind or at least think twice. I can just about hear all the paranoid panicky worried wells beginning to type away furiously, providing me with a blow-by-blow of their latest blow-by-blow and begging for me to quantify their specific risk.