So I never used to have this issue but now anytime I eat a banana or avocado, sometimes tomatoes, my stomach hurts for a few hours. It's happened when I changed my diet to mostly vegetables and proteins but also after several months of maintaining a high fiber diet like that my stomach still hurts so bad when I eat those certain foods.

Does anyone else have this issue or an idea why it happens? I'm not allergic and don't have any health concerns or disorders...