Thanks for using HCM, I understand your concern and will try to give you my medical advice, I think go to the doctor could be a good idea although Im thinking in some digestive disorders at this moment you are loosing salt and water through vomiting and diarrhea (that caused your dizziness and headache) if those stop you can start to hydrate by mouth if not you are going to need a professional help to avoid some metabolic complications.I hope that my advice has been helpful. Take care