daveedo, were you taking any antibiotics or any other meds. sometimes a change in metabolism can alter ones ph level in the mouth, causing ulcers and such..that is only my opinion.
Test results ALWAYS trump symptoms where HIV is concerned. No exceptions!
You are HIV- as confirmed by your numerous tests.
Incidently, oral thrush occurs in many healthy people, and it is NOT common symptom of early or chronic stage HIV infection. It was seen as a common OI of late-stage HIV infection (AIDS) prior to the emergence of ARVs.
See your doctor for proper diagnosis and treatment of the oral thrush. It shouldn't be persisting this long, but you can be absolutely sure that the cause HAS NOTHING TO DO WITH HIV.
Best wishes.