Thank you for this response! I also really struggle with that fear of sickness, for sure. When I was at university, I had to have 12 hour bus trips to and fro to get home. On one, somebody seemed to be travel sick and each time I heard them I would just freeze. An awful experience (amongst many, lol).
I notice that feeling full seems to make me nauseous, which kicks in that fear of vomiting even when I know the unlikeliness of that (I haven’t vomited in 7 years!!! But have worried about it DAILY) and then I’m in a bit of a spiral. I do have a book saved on my laptop about emetophobia, but my various anxieties are so tangled up that I never know where to start!