Did you had unprotected Vaginal sex ? If Yes, then it was a risk and you did the right thing to be on pep within 72 hours (Pep is very effective).
Your negative test is encouraging. However it is not conclusive as you need to take (4th gen duo) after 28days post finishing the pep.
As already told you, PEP is very effective if taken within 72 hours which you did.
Get antibody test after 28 days post finishing PEP to be conclusive.
You didn't need PEP from this incident. Your chances of acquiring HIV from this incident is substantially low. I am taken aback to see so many individuals that do not qualify for PEP but being on it! Can't seem to make sense out of this, really.
Ideally, you should have just straight up taken a 4th Gen HIV test at 28 days with out the PEP.
You do not qualify for a PCR RNA test, you were in no way in category of a "high risk exposure".
Recommended test for your situation is a 4th Gen HIV Ag & Ab test at 28 days post finishing PEP or alternatively, any standard antibody test at 6 weeks.
No one here on this forum would be surprised if you get a negative result, that's how it has been for years for your kind of suspected exposure.
6 weeks from the last dosage of your PEP medication.
Your symptoms don't mean a thing and they are your own diagnosis, it's cold and dandruff is a very common occurrence. I am not sure about your itching issues. Again, 'Atopic dermatitis' is your own guess. I recommend you to take care of your own hygiene.
Quit reading online and conducting self diagnosis, you are only creating issues for your ownself.
The right course of action is to wait for another 8 days and get a IV Gen HIV test. No other test can indicate HIV.