Was at 3 different ENTs and one internist, nobody found anything besides low-grade gastritic C,
no H. pylori. Also had a swab at the last ENT,
no results but I guess they just test for the wrong pathogens.
I also considered SIBO, but here they don't provide any methane testing, only hydrogen. But my gut flora is also very bad, a test revealed high pH, high Klebsiella species, low Lactobacillus species, low Enterococcus species and low secretory IgA.