Hello, In most cases problem of swallowing food is in esophagus. It means that esophageal muscle doesn’t work well or there is motility disorder. You need to do esophagus contrast study or gastroscopy to evaluate this. Also, your symptoms may indicate specific condition called hiatal hernia and this means that stomach is protruding through diaphragm muscle. It may cause breathing difficulties, nausea, swallowing difficulties, and irritation of stomach. It will also be aggravated by certain food or medications, stress and smoking. You need to avoid fried food, carbonated drinks, coffee, alcohol and spicy food. You should eat more milk products, vegetables, and boiled food. Also, certain antacid medications may be required and as last option, it is possible to perform surgical repair of hernia especially, if there are progressive respiratory discomfort and dyspepsia. To diagnose it you should do gastroscopy and if this is negative as in your case then you should do contrast x-rays of stomach. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Ivan R. Rommstein