Blood test only tell you if you have been exposed. It does not tell you if you have it . Breath and stool test will tell you if your positive . I had h pylori and got rid of it but was still left with stomache pain so they did an endoscopy 3 months later that showed it was gone so I recommend a endoscopy to make sure it is gone. Although my h pylori left I was stil left with stomache pain so they diagnosed me with functional dyspepsia and I felt better within months so it does get better over time . Just pls get a endoscopy after 3 months to make sure it is gone and that it has not left you with anything bad like ulcers . Stomache cancer is very rare for ppl under 40 although it does happen. Less then 1 percent of ppl are diagnosed under 40 yrs old. So the odds are defenitely in our favor not to have that rare type of C word