Stinging Back of Throat

I've had two occasions -- once last night, and just a few minutes ago, where the back of my throat started hurting -- stinging, while I was eating.

So I decided to type up the ingredients of the foods I ate to see what is the common factor.

Last night - Some chocolate cake (I don't have the frosting container anymore, but I will type down the cake mix and added ingredients)

Pillsbury Moist Supreme Devil's Food cake mix
Sugar, enrisched bleached flour (wheat flour, niacin, iron, thiamin mononitrate, riboflavin, folic acid), wheat starch, cocoa processed with alkali, partially hydrogenated soybean oil, baking powder (baking soda, dicalcium phosphate, sodium aluminum phosphate), contains 2% or less of propylene glycol mooesters, corn starch, natural and artificial flavor, salt, cellulose, mono and diglycerides, cellulose gum, xanthan gum, polysorbate 60, red 40, TBHQ and citric acid (antioxidants)

Contains wheat ingredients, may contain milk and soybean ingredients.

Added 1-1/4 cup water, 1/2 cup vegetable oil and 3 whole eggs to the mix.

Frosting I used was Duncan Hines Chocolate (can get ingredients list later)

Sandwich today: Peanut butter and jam.

Peanut butter: Kroger Crunchy Peanut Butter.

Ingredients: Made with roasted peanuts and sugar, contains 2% or less of molasses, fully hydrogenated vegetable oils (Rapeseed, Cottonseed and Soybean), Salt.

Welch's Concord Grape Jam
Ingredients: Grapes (Concord Grapes), Corn Syrup, High Fructose Corn Syrup, Fruit Pectin, Citric acid, sodium citrate.

Nature's Own Whitewheat Sandwich Bread (front of package says "No artificial preservatives, colors or flavors, no high fructose corn syrup")

List from the company's website:

UNBLEACHED ENRICHED WHEAT FLOUR [FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMIN MONONITRATE (VITAMIN B1), RIBOFLAVIN (VITAMIN B2), FOLIC ACID (A B VITAMIN)], WATER, SUGAR, FIBER (SOY FIBER AND/OR COTTONSEED FIBER), WHEAT GLUTEN, YEAST, CONTAINS 2% OR LESS OF EACH OF THE FOLLOWING: CALCIUM SULFATE, CALCIUM CARBONATE, VEGETABLE OIL (SOYBEAN OIL OR CANOLA OIL), SALT, SOY FLOUR, DOUGH CONDITIONERS (SODIUM STEAROYL LACTYLATE, CALCIUM STEAROYL-2-LACTYLATE, MONOGLYCERIDES, CALCIUM IODATE, ETHOXYLATED MONO AND DIGLYCERIDES, CALCIUM PEROXIDE,DATEM, AZODICARBONAMIDE), CULTURED WHEAT FLOUR, GUAR GUM, VINEGAR, FERROUS SULFATE, THIAMIN HYDROCHLORIDE, MONOCALCIUM PHOSPHATE, YEAST FOOD (AMMONIUM SULFATE), SOY LECITHIN, 050710

Thank you to the companies for sharing the nutritional information on their websites. I'm not crazy about some of these ingredients, Azodicarbonamide being used in plastics for example (why am I eating this?!?) But I don't blame the companies, but clearly I am too sensitive to eat most of these ingredients anymore. There must be a better way to eat.