If you would've have a risk, 6 weeks would be a very strong indicator of your status, but would need to be confirmed at 12 weeks. Over 95% of infections are picked up in the 4-6 week range, and that is with standard antibody testing which is what I assume you had done.
unsure of the test. i believe it was performed by quest diagnostics though. i dont know what hiv tests they use
Oral sex is not considered a risk, and your negative tests prove it. Do you know what kind of test you had done?