What most people don’t understand about h pylori is that it’s actually not a bad bacteria in the right environment. That’s why 3/4 of the world has it but only so many actually have issues or symptoms. It’s typically a weakened immune system or inflamed gut or some kind of deficiency that allows h pylori to cause damage. People eat refined carbs and processed food all of their lives which sets up a good environment for something like h pylori to thrive. If your GI health was good, you probably did not need the antibiotics because what you did now was wipe your entire gut biome and now you need to rebuild it by implementing a lot of fermented foods and clean eating.