Try to relax. Your current doctor is exactly right and your HIV test is virtually 100% reliable. As I said above, test results always overrule symptoms.
Thaks for the advice, doctor.
Like many people, It was a drunken mistake;i don't even believe it has happened.
I'll visit the ID doctor on thursday. Yesterday I saw the regular doc and she said not to worry and gave me another round of nystatin + diflucan. She says that is not so uncommon that the thrush takes a while to disappear.
Well, I'll let you know how my visit with the ID doctor goes. I hope am not the hiperunfortunate one. But, yes, you're right, with the cough, the mouth and all, i am deeply worried.
Welcome to the forum. Thank you for doing some research and looking at other threads before asking your own question. However, I fear you have missed one of our most consistent messages: as long as HIV testing is done sufficiently long after the last exposure (4 to 12 weeks, depending on the test[s]), the results always overrule symptoms and exposure history.
Therefore, your test results show that for sure you do not have HIV. Indeed, if by "4th generation: you mean a combination test for both HIV antibody and p24 antigen, your 5 week test was 100% reliable. Also, it is very, very rare to catch HIV heterosexually from a single episode of vaginal sex; the anyway, the odds are strong your CSW partner did not have HIV.
Coated tongue and other oral surfances are not necessarily thrush (yeast infection), and even highly skilled physicians can easily mistake the diagnosis. If diagnostic tests for yeast have not been done, you may not have thrush at all. Antibiotics often can trigger either coated tongue or true thrush, so my guess is that whatever is going on is likely related to your recent amoxicillin treatment. In addition, I disagree with your doctor about oral thrush as a sign of severe immune deficiency; it occurs in entirely healthy people (in fact I once had it myself). Finally, early HIV doesn't generally cause cough, headache, and the other symptoms you describe.
So the first step is to confirm you in fact have an oral yeast infection. To your specific questions:
1) Yes, amoxicillin could trigger either coated tongue or yeast; see above.
2) Additional HIV testing is not likely to be helpful, but if you see an infectious diseases specialist, s/he might have different advice. However, your negative combo tests at 5, 8 and 12 weeks are sufficient to be sure you don't have it.
3) My advice would be to see either an infectious diseases or oral medicine specialist, if you can find one. Oral medicine is a dental specialty. Such specialists often can be found at univeristy schools of dentistry.
Final advice: I hope this experience reinforces the importance of condoms for casual or commercial sexual exposures. Although I am confident you did not catch HIV, probably you would be a lot less worried if your recent CSW exposure had been condom-protected.
I hope this has helped. Best wishes-- HHH, MD