Thank you for your inquiry. From what we gather from the question, you were asking about the risk of acquiring HIV after engaging in unprotected oral sex and protected vaginal sex, as well as the conclusiveness of the negative test results you have received. From the information given, this scenario is determined to be Low Risk (evidence of transmission occurs through these activities when certain conditions are met).
The scenario mentioned above could meet the three components of the transmission equation if the condom was not used properly or broke during sex. It was very responsible of you to use a condom when engaging in risky activities, but they are not 100% effective at preventing HIV transmission.
The 4th generation test is considered conclusive by most HIV specialists 6 weeks post-exposure. Some guidelines and physicians recommend re-testing 12 weeks post-exposure for completely conclusive results. With this in mind, all of the negative results you have received outside of the window period (6 weeks post-exposure) are conclusive and you can be rest assured that you very likely do not have an active HIV infection.
Please note that nothing is ever 100% certain, especially in science and medicine. The 4th generation test is considered 99% accurate 6 weeks post-exposure and 99.9% accurate after 12 weeks (1). The negative test results you have received outside of the window period are conclusive and any symptoms you may have experienced are very likely not due to an HIV infection. If you have any further questions about the specific testing you received please consult your physician.
Recommendation: Since negative testing has been accessed outside of the window period, no further testing is required. Please refer to a healthcare professional for more personalized answers.
AIDS Vancouver Helpline/Online, Marie
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1) HIV Testing Technologies