Thrush and TesTing

Hello,
I have a couple of questions for you.  I have been tested at 3 months, 7 months with Elisa at a doctor's office and I have a rapid test, finger prick at about 13 months all have been negative. I have been told that I am negative based on my test results and I believe it 85% of the time the only problem is that I have this white tonuge issue that started soon after my possible exposure, so I have had it for over a year.  Every morning I see it and wonder what is going on.  I went to an ENT specialist and at first I was told my one physician that it was thrush and then by another one in the same practice that it was a natural variant.  I am concerned becasue I understand that thrush is a symptom of HIV, but I also have been told that thrush comes on in later stages rather than soon after a possible exposure. In the morning I will brush it and it is removed for the day except for along the sides of my tongue but then in the morning my tounge is white again. My questions are:
When does thrush appear?
Could there be anything that prevents me from developing antibodies this far long? If the white tongue is associated with HIN would I have also developed antibodies?
I have not had a possible exposure in well over a year since I started testing, so can I relax and move on? Is six months the latest that I would need to be tested and is 6 month Elisa pretty conclusive. As I said I tested at just over a year with a finger prick and it was negative.  Are rapid finger prick tests reliable?  Please help me put this to rest and guide me if I need additional medical care.
Thank you for your time and support.

[Teak]

http://www.medhelp.org/posts/HIV-Prevention/Confused---HIv-Testing-and-Thrush/show/1410692?personal_page_id=1915871#post_6434567

[Tonee2532]

Please.  I just need a little more information so that I can move on. Can you take a few moments to clarify my questions. Thank you.

[Tonee2532]

Thank you. What treat has your physician prescribed and to clarify do you still have a white tongue and you tested negative at 32 weeks?

[Tonee2532]

The question should have read what treatment has your doctor prescribed.

[Teak]

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[Tonee2532]

Thank you. So I should not consider the tests to be false negative tests.