Judy, it is good that you don't take meds. The only thing I can think of is to clear yourself out and try, just to see what happens, very liquidy hot cereals, smoothies, pureed vegetable soups. Pea protein powder and egg whites do well in hot cereal.

Alternatively, could it be IBS-C? Could you be FODMAP sensitive? A few years ago my IBS went postal and I lost weight and was uncomfortable. Now I have a short list of foods that don't trigger it, along with stress reduction exercises. It is definitely a regime.

As far as a doctor goes, make sure you have confidence in him or her. I would want a gifted surgeon if I needed such. I have had good luck limiting most of my docs to those on Castle and Connally. That firm researches the doctors listed and do not accept money from any of them.