I have the same problem. Would love and answer to this.
Do you mean diverticulitis? My grandmother has that and cannot eat anything with grains and seeds (whole grain bread, strawberries, etc). From what I understand (and I'm not a health professional!) diveriticulitis is in the intestines... has your doc said that is what is causing the stomach pain? Doesn't seem right to me - maybe there is something else going on???