[Concern] I haven't been able to digest well for a few days.

A few days ago, I didn't eat anything in the evening, but I woke up during sleep due to symptoms of acid reflux. Since then, for several days, I have experienced discomfort and a burning sensation in my stomach whenever I eat. Yesterday, I also had these symptoms, but after drinking plum extract, I felt better after a while. I had an endoscopy earlier this year, and everything was normal.

I'm curious whether such symptoms can occur even if it's not the above problem.