Hello, I had oral sex with A Chinese woman In exchange for money from Canada, and I'm from North Africa. I performed oral sex for no more than 15 seconds, and there were no fluids involved. She gave me oral sex until I ejaculated in her mouth, and the duration was no more than 20 seconds. 5 days after exposure, I noticed swelling of the lymph nodes under my chin in one spot only, and on day 6, I experienced dry mouth, night sweats, and some chills, maybe fever, I'm not sure. Then I had a white tongue and thrush in my inner cheeks that was difficult to remove, causing me to lose my  inner cheeks that was difficult to remove, causing me to lose my appetite and have a bitter taste in my mouth. I also have a transparent ulcer in my inner mouth that doesn't hurt and hasn't disappeared yet. I've lost a lot of weight, especially muscle mass.                           On day 12, I decided to take    a fourth-generation (combo) test. They took blood from my vein, and the result was negative. However, it was too early at that time. I took a home(insti) test after 17 days, and the result was negative as well. Now it's been 28 days since exposure, and I'm still suffering from swollen lymph nodes under my chin and oral thrush or candidiasis, and I don't have the courage to take the test again because I'll be deported due to my temporary residence status.

Welcome to our Forum.  Thanks for your questions.  I'll be glad to comment.  The short answer is that your symptoms are certainly NOT due to HIV and the likelihood that you acquired HIV from the exposure you describe is virtually zero.  I'll make the case supporting this several ways.---

Doctor, thank you. I have another question about testing. I bought some tests from Amazon that rely on a finger prick and are called "Insti" tests. They should arrive in week 5 from my exposure date. I want to know if my symptoms could be due to HIV, and whether these tests can detect the virus at this time or not?

INSTI is a brand name, the INSTI self test typically tests only for HIV antibodies and thus does not provide conclusive results until 8 weeks after exposure.  Most clinic-based HIV tests test for both HIV antigen (the virus coat) and HIV antibodies (which are produced by the infected person in response to the infection).  These combination, 4th generation tests are entirely conclusive at 6 week while the antibody only tests take 8 weeks to be conclusive ( these are called 3rd generation tests)---

Thanks for your follow-up.  You week 7 INSTI result is effectively conclusive despite "official" recommendations" that results are not conclusive until 8 weeks following an exposure.  You have clearly proven that your symptoms, including your swollen salivary gland are not due to HIV.  I urge you to put your concerns aside and move forward without concern.  ---