Sore throat, fever, earache, headache.

I am a 16 year old female. When I eat certain food such as Fruits, Honey, Chocolate, Vinegar, Candy, Tea, Peanuts butter, Preservatives, Propel, and Tomatoes, my throat "burns" and I feel nauseous for a couple hours. I feel a coating that tastes acidic and it is uncomfortable to swallow. I have had these symptons for many many years, however, it is presenting itself more and more often and more severly. It is getting to the point where I no longer know what it feels like to eat without my throat being affected. If I burn my throat severely, I will have a solid 99.5 fever for about 5 days, a headache, an earache, a sore throat, and chills. I have already been to an allergy doctor and everything I was tested for was negative. I've also head blood work done and there was nothing out of the ordinary.