Hi - I'm 66 with a similar history of stress, but from trauma. Also, my symptoms ramped up at menopause. I've had methane dominant SIBO and constipation as well as reflux. Found a sensitive practitioner and constipation resolved with Magnesium SA and Magnesium Citrate and Liposomal vitamin C. I take the Liposomal Vitamin C morning and evening and the Magnesium at dinner time. It was important that the form of the magnesium was digestible given the state of my gut. I've also tried many other supplements to deal with various "bugs" and "fungi" . I still suffer the reflux and am going to undergo an endoscopy/bravo test in October to see what is going on. Damage to my LES muscle? I've consulted Bella Lindeman's group as well. And read many of the others mentioned here. I do a lot to keep my stress managed - especially attending to nourishing myself with wonderful companions and experiences - simple ones like reading poetry and memoirs, indulging in good movies that tell stories about people and their challenges, and I've built local community in new ways... and I weed out much of the negative as much as is possible. Even with what is so challenging in our world today, it is possible to connect with those doing something hopeful and I volunteer my energies toward being of help to others. That is what heals me these days. I am fortunate to have a loving companion as well who is very accepting of my good days and harder ones. I do try to keep my sense of perspective and gratitude.