Gut health hurts in so many different ways and is caused by so many different factors. You got great advice here. I might suggest researching an endoscopy for celiac disease. Since you are already wheat sensitive and you have diarrhea, that points to celiac symptoms. There are blood tests that can indicate celiac, but biopsies of your small intestines is THE ONLY true diagnosis. But, if you do get the endoscopy, it is imperative that you eat gluten just like you always have, even a couple of days, gluten free, can alter the results and you may get a false negative. It's an extremely important step, but the endoscopy is one of the easiest tests I have ever done. Also, your blood tests can be negative, don't let the doctor talk you out of the endoscopy. You can be seronegative and biopsy positive. Also, ask for the biopsy samples get DNA tested. My celiac was a complete shock, since I didn't have the common symptoms... but the DNA gave my adult children a concrete reason to request the endoscopy and their DNA tests. Good vibes going forward.