During the session we did not have sex nor was there any penetration. The only things that she did do was perform rimming and fingering on my anus as well as she rubbed her unprotected penis head on my anus multiple times.

Before we started i did ask her about her health status to which she informed that she was clean of any stds and had performed her last std panel on the 7th of july and had another a medical fitness blood test done from a a governmental clinic for her visa as required by the law here both of which had returned negative. She also informed that she was on PREP for atleast 1-2 years.

On the 26th day after I met her, I did a duo test which returned negative. Recently my family have started to put proposals out for my marriage and that has gotten me very anxious regarding this event. To add to this I am not having the best time at work which has increased this further.

1. What are the chances of an HIV infection in this scenario?

2. Was my test done too early to have not detected an infection if present?

3. I am planning on doing a test in this week to finally close this chapter, what is the probability of it returning positive?

Thank you

In the situation you describe, your encounter was a virtually no risk event.  Most transgender persons do not have HIV and even when they do, most penetrative encounters do not lead to infection.  In your case, receipt of analingus (rimming) and masturbation are no risk events.  Further, your partner told you that she was not infected and was in PrEP  and most people tell the truth.  Finally, your 26 day test is more than 98% conclusive.  Thus, in response to your specific questions:

Yes

I hope that this information is helpful.  EWH

In regards to question 3, your response was "Yes" and has me a bit confused . Could you please elaborate?