Wow; how horrible, I can't even imagine frown

"You may wish to coach ds to learn to say directly when he doesn't feel well, if it feels like his food allergy and ask for his epi-pen in case it is needed."
this REALLY sounds like a good idea, if reasonable with a 5 yr old, but then you can't put too much of the burden on them. Ya gotta check.

I do remember when getting a recent allergy shot, turning bright red and trying to politely get the attention of the nurses who were chatting, and finally just saying "I think I'm having a reaction" which completely threw them into overdrive, so it does help to be clear whether a child or adult. (but again, kids are just not always gonna remember to be clear).