This article breaks down how alcohol affects your stomach and digestion, sometimes causing the dreaded tummy-ache. You'll find out why drinking can trigger problems like bloating, pain, heartburn, or even diarrhea. It explores which drinks are likely to upset your stomach most and what actually happens inside your gut after a night out. Plus, it shares practical tips to keep your digestion in check if you want to enjoy a drink without the stomach misery. Real facts and easy advice make this a must-read for anyone who's experienced a hangover gut.