You were also told that any HIV test taken more than 8 weeks would provide definitive
results. Obviously then, a 126 day
test would also be definitive as well. there is no such thing as "delayed seroconversion" - this is an urban myth.
This will be the only answer to your question. You really need to move forward, not continue to worry about HIV. If you cannot do so yourself, then you should seek professional help in doing so. I say this out of concern.