Yes, I agree. Your test at a month after was sufficient to stop worrying about HIV. You should release yourself from the anxiety.
A duo is conclusive after 4 weeks and any other after 12, so you don't have hiv. Likely your first clinic test was also a duo which would mean 2 conclusive tests which is over-testing so you should move on.
Late seroconversion is an old myth disproven long ago, so you will be much happier if you stop searching the internet for hiv and move on from it instead.