How do you catch Hp? From your mother when she kisses you? From brothers and sisters as a small child? From sexual partners as adults (kissing)? From dirty water (fecal contamination)? From animals? Who knows???
I would suggest you to do an endoscopy. but before that, ask your specialist if he has access to antibiotic sensitivity testing. That test will find out exactly what antibiotic will kill your resistant H. pylori. You'll have higher chance of getting rid of it once and for all.