First of all, being transgendered does NOT make someone "high risk" for HIV. Sex and gender orientation have nothing to do with HIV - risk is about sexual behaviors, not identity or orientation.
Second, the risk estimates from oral sex are theoretical, and no evidence shows that people are infected from oral sex daily. KNOWN, proven risks are having unprotected anal or vaginal sex, and sharing intravenous needles. If you stay away from both of those activities, you will never have to worry about HIV.
You didn't have a risk and there's no reason for you to test.
You have already received a thorough insight and apt reasoning to your misconceptions.
Ingesting infected fluid can't enable transmission of HIV because this virus needs a suitable host for replication. Transmission only occurs through direct exposure with the nervous system under specific conditions.
When one ingests infected fluid, the saliva and the gastric juices in the stomach inhibits the virus. Therefore, a direct contact with the digestive system is not effective at transmission of this virus.
You were never at risk and don't need to test.
In medicine there is nothing called 100%. Most doctors would state '99.8%' for such situation. However, there are some doctors who would step aside from their medical text book notions and state things from practical context. Dr. HHH and many other leading HIV researchers / specialists have believed it not to be a risk and clearly stated so.
If that minute fraction of risk makes you worried about contracting HIV, you should rather be worried about dying of falling off your chair right now while reading this because the likelihood that happening is higher than you contracting HIV from your event.
See a therapist if you are unable to move on from this fear. You don't have HIV.
Hello all. Thanks for your words and reassurance on this. For the sake of my mental health I went and got tested, results came back negative. Thought I'd post an update for the sake of any worried wells lurking.