Hi. Thanks for your query and an elucidated history. The burger has caused severe gastritis. Since you can not hold anything orally you are getting dehydrated causing dryness of the throat. I would advise in such a situation the following: Rush to ER or hospital as you need intravenous fluids, PPI and antiemetics Investigations like serum electrolytes, correction of sch deficiencies. I hope this helps you. Since vomiting is unrelented. You CA not really try anything at home as whatever you try will come out.