Anxiety has lead to a fear of food

I don't know how this happened but I had a panic attack a couple of weeks ago and ever since I've had the biggest fear of eating incase I have anaphylaxis. I haven't had an allergy test recently but so far I haven't had any allergies to food. I get really anxious when I see things that contain nuts or soya. Also I was eating carrots yesterday and they apparently can cause anaphylaxis! I'm literally going mad :( does anyone else experience this problem?