I am male, 20 years old this year. These days, I have symptoms of eating quickly, I feel full, after eating, I feel no digestion, and my stomach is full. Walking is still normal. After eating, the stomach is tight and slightly throbbing in the upper abdomen. So the doctor asked me, if I eat quickly, I can't digest it, is it a digestive disorder? Looking forward to the doctor's advice, thank you!