Just make up any window period that you feel comfortable if you want to take that placebo test. You didn't believe any of the advice you got here before, because the only science you believe in is your own science fiction theory so you won`t believe any more advice now.
You were provided with clear responses on 2 instances:
You have been around since last 4 years and have had issues with anxiety. There is nothing for you to worry about HIV, don't confuse guilt of cheating and / or issues inside of your head with having sex with a transgender with HIV fear.
This is an HIV prevention forum and you don't have a relevant concern, please see a counselor to address your real issues objectively.