You are soo right. It is a shame that doctors don't take time and actually test before diagnoses, even if they might be right. In this day and age of lawsuits, you would think a doctor would think!
Your low stomach acid could be allowing the proliferation of bacteria in the small bowel, SIBO. Enteric coated peppermint oil has done wonders for me. I am also just starting a course of GSE, 250mg, 3 times per day for 2 weeks to ensure that nothing else unwanted remains in my small intestine. I am using kombucha tea to help support my flora, and I'm starting a total body cleanse that includes FOS. Hopefully, altogether, I will come out much healed. After the GSE, I am going to do an intensive probiotic replenishment before things can go out of whack again.