2 years on PPIs: Constipation. Changes?

2 years on PPIs: Constipation, spice sensitivity, post-meal brain fog & possible SIBO? I have been taking PPIs for 2 years. After switching from 3 to 6 meals a day, I developed persistent constipation that has lasted for months (currently relying on husk). My symptoms include: IBS-Like Pain: Even tiny amounts of spicy food trigger lower abdominal pain before/during bowel movements, relieved after pooping. In the following days, my appetite drops and constipation worsens. Post-Meal Brain Fog: Severe fog and uneasiness after breakfast, which improves slightly after lunch. Sugar Reactivity & Cravings: Intense sugar cravings. Eating sugar causes sweating and shakiness, making it hard to focus at college unless I give in to cravings. Given my 2-year PPI use, could this be SIBO (Small Intestinal Bacterial Overgrowth), reactive hypoglycemia, or gut motility changes? Thank you.