Oral sex is not an HIV risk and no one in 40 year history of HIV got it from oral. End of that issue.
Only sexual risk is unprotected vaginal or anal so you needed to test at or after 28 days with a 4th generation test for a CONCLUSIVE result. Since you didn't do that, you can take any test today for a CONCLUSIVE result. It is unfortunate that you have suffered mentally but that is water past the bridge today.
You can end all the needless agony of worrying with a test today, and the corollary is nothing but a test will end your needless agony.
All else in your post is irrelevant for various reasons, one of which is that HIV doctors do not pay attention to symptoms when diagnosing.