Hello, Thank you for the question and welcome to Healthcaremagic! Inorder to help you i will need some more information about your health like which medicines are you on? if female are your periods regular or have you missed a period? Nausea, vomiting and dizziness are very general symptoms which can occur in number of conditions. Fever is the symptom which will reflect you have infection in your blood stream. Get a complete blood count test done to check for high WBC or low Hemoglobin as cause. If female get a pregnancy test done if missed period. Take antacids. This will help. Hope this helped with your query. Follow back for any future questions. Takecare!