Need advice.

Over the past month I’ve discovered I’m afraid to eat food I have literally been eating constantly.

I start to panic and choke, get lightheaded, and gag when I eat almost anything (other than my Purdue chicken nuggets).

I came across this page and people have been saying things that resonate and it’s been really helpful.

BUT I was hoping people can talk me down a little-

1.) Does anyone have any advice how they introduced most foods? Is the answer taking a little bite and waiting 10-15 minutes to see if I don’t die or have anaphylactic concerns?

2.) is a little piece of something going to kill me?

3.) is it even possible to develop a new allergy in a month or two? Or does it take a longer period of time?