You might find a doctor who will treat you prophylacticly. Take the antibiotic, if the symptoms go away, you had H. pylori.
on a similar subject, I’ve been having symptoms for the last couple of years. I told my doctor and he prescribed proton inhibitors which I refused to take. Three months ago I went down to Michoacan and ate something I shouldn’t have. That night I vomited about 6 to 7 times and had watery stools for the following 2 days. Since then my gastric symptoms have gone away and I feel normal again. I can now drink coffee, eat spicy foods, etc.