Hi, I had gone through your question and understand your concerns. I dont htink that vomiting could cause hiatal hernia but it is possible that you had hiatal hernia previously since it may go with such symptoms which happen when stomach is protruding through diaphragm muscle. It may cause breathing difficulties,nausea, swallowing difficultires 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 antiacid 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 contrast xrays of stomach. Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing you good health.