Mine was slow transit from hormone imbalance (it's notably cyclical) but I'm not taking anything now.
I saw an endocrinologist yesterday who also said my previous duodenal ulcer diagnosis (about 15 years ago which didn't have endoscopy for until after it apparently healed) was more likely to be gastric migraines which cause similar digestive distress but it isn't caused by acid but by oestrogen. She said she sees a lot of women with similar type symptoms to me so not sure if my migraines are rare or just not easy to diagnose.
However, I definitely don't do well with acidic aspirin based meds (including the topical gels) as they make my stomach sore for a few days which I think is quite common (hence why they're often prescribed with PPIs to combat the acid). Stopping acid with PPIs though makes me unable to digest food and I then get sore from that so I'm just leaving my stomach to chug along. Wine helps with digestion though.