I use to wake up in the middle of the night with the worst stomach pain in the world.   I is accompied with my mouth filling up with very watery salava.  It looks like water pouring.  This would only last about ten minutes or so but I would have to eat something because I woud feel so hungry that I thought I would pass out.  Now, this not only happens in the middle of the night, but I have these bout more frequently now and all during the day.  I thought whatever it was had went away.  Help
Its gastric ulcer. You are advised to avoid hot spicy foodstuff. You can even take an upper gastrointestinal endoscopy to confirm the diagnosis. Take photo pump inhibitors or H₂ blockers to help. Consult your physician