Question About H Pylori and Blood Tests

Hi, I would like to ask you some questions.

I have several disorders for many years such as gastrointestinal disorders, heartburn, burping and muscle aches and I have done numerous tests but unfortunately I failed to understand what are caused.

I made the research of helicobacter pylori through a gastroscopy and other examinations but proved all negative. Now My doubt is this: Is it possible that this bacterium was not identified by tests ?

Over the years I had weight loss about 5-6 kilograms and muscular wasting.

Could Helicobacter Pylori cause over the years, if not treated a vitamin D deficiency, severe widespread muscle pain and especially in the calves ? Reactive lymphadenopathy ? Can eosinophils increase?

Molecular identification (PCR)may be helpful ?

Thank you very much