It's been 2 or 3 years, I am coughing during and after eating food. Especially the heavy meals such as lunch and dinner. During having a meal, I cough and mucus comes in my throat. When I finish eating, that mucus irritates me and I cough to get rid of it but it doesn't help. After sometime, I don't feel mucus in my throat and it becomes normal. If it's light snacks then I don't get mucus or cough. Please tell me what's the reason behind this as it's really hard to eat food peacefully.