Welcome back, but I'm sorry you found it necessary. I reviewed your discussion with Dr. Hook and suggest you go back and re-read it as well. That would be a much better use of your time than continuing to search the internet for rare and arcane manifestations of HIV.
The main take-home message from Dr. Hook and me is that the HIV blood tests, including the ones you had, are among the most accurate diagnostic tests ever developed for any medical condition. When done sufficiently long after the last possible exposure, as yours were, the results overrule all other considerations. No matter how high the risk of HIV at the time of exposure and no matter how typical the symptoms, lab abnormalities, or other medical issues might be, the test results rule. Your test results prove you do not have HIV. Period, full stop: there has never been an exception. Nobody with your test results at those times has ever turned out to have HIV. It doesn't happen.
1) TSH levels fluctuate naturally and yours are irrelevant to HIV. If you are in care for a thyroid condition, discuss with that doctor or clinic, but stop obsessing about HIV.
2,3,5) As I said above, the level of risk during a potential exposure event doesn't matter. Whatever the chance of HIV exposure, your HIV test results show it did not happen.
4) NO medicines alter the reliability of the type of HIV tests you had. The possibility that immunosuppressive drugs could do so goes back to older HIV blood tests, and only to tests measuring antibody alone. Even then it almost never happened. With the antigen-antibody (4th generation) tests, it simply does not occur. Your wife's drugs make no difference. And no, carbamezapole is not immunosuppressive anyway.
The only reasons you are "confused" is that you are ignoring or choosing not to believe the reasoned, science based reassurance we have given you; and that you continue to waste your time and emotional energy searching the internet. Like many anxious persons, you are being drawn to information that inflames your fears and missing or entirley ignoring the ressuring information that also is present.
Let me know if anything isn't clear. But think before you ask: please do not repeat questions whose answers are obvious from these comments and those from Dr. Hook.
If all this sounds a bit harsh, I apologize. Call it tough love if you like, but the goal is to convince you to stop worrying and help you put all this behind you and go on with your life. And please do go back and re-read your previous thread with Dr. Hook. Best wishes.