Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. Emetophobia is an intense, irrational fear or anxiety pertaining to vomiting. Do you have fear of vomiting or are you having food poison? Cold and hot flashes, nausea, head ache are symptoms associated with anxiety as well as food poison and anxiety. You are in sheer panic because you are not able to determine what is your problem and that is no emetophobia. Please consult a physician. Psychotherapy techniques should suit your requirement. If you require more of my help in this aspect, Please post a direct question to me in this URL. http://goo.gl/aYW2pR. Make sure that you include every minute details possible. I shall prescribe the needed psychotherapy techniques. Hope this answers your query. Available for further clarifications. Good luck.