my job keeps making me work with peanuts

I've had a peanut allergy for my entire life. it got better with age until christmas two years ago. i was making a display with peanut m&ms, and i started feeling feverish and developed a migraine. i thought i was just getting sick, but then my lungs started to burn and my throat felt tight, which is what made me realize i was having an allergic reaction.

My reaction times are only getting shorter, and they vary between what i described above as well as watering eyes, running nose, burning throat, nausea, and feeling like there are knives in my stomach.

I've brought paperwork from both my primary physician and an actual allergist, but it got rejected. I'm not really sure what to do at this point because they keep making me work candy despite being around a vast amount of peanuts for 8 hours, which makes me very ill. everyone keeps making me feel like I'm just being over dramatic, and I'm not really sure if there's anything i should do or if i should just suck it up.