Doctor, I had a bowl of vermicelli noodles before, after eating I rinsed my mouth and went to sleep because it was late at night. When I sleep I have an uncomfortable feeling in my stomach. The next morning I still had stomach pain so I was very tired, felt like fever but not hot, no nausea, couldn't sleep, couldn't eat, I always felt bloated, belched up with water, I didn't go to the toilet for a few days. It's convenient, I'm most afraid when I sleep, I feel very uncomfortable, especially in the abdomen, near the hydrocephalus, can you tell me what this is?

I often have indigestion and have a lot of saliva at night. Every time I eat something hot, my throat gets stuck, spitting up brown sputum but spitting it out is very difficult. I went to the doctor and the doctor said it was okay, both of these conditions are very common. So the doctor asked me what is the disease when I don't eat, drink a lot of saliva when I sleep?