I'm wondering how many here have actually had food poisoning? I have, and I've also had, as have we all, I imagine, all sorts of other stomach viruses, indigestion, etc. With at least the type of food poisoning I had, it wasn't like any other type of gastro-intestinal illness or upset I've ever had. It also was pretty easy to trace back to what it was that I had eaten that caused it (clam chowder). And if I ever have it again, and if it's the same kind, I'll know what it is without having to go to the doctor! And, yes, mine was diagnosed--first by my mom, who was an R.N. and very good and very experienced; then by my doctor.
Regardless of whether one thinks the OP should or shouldn't report it to the MSC (which is a very good topic of debate), or, if so, how to word it, I really don't understand all the naysaying of the OP's opinion that he or she had it.
I know of another shopper who got a very serious case of food poisoning while doing a shop, and was also banned by the MSC. I don't understand that! Surely the client needs to know.... But I assume the MSC was more interested is saving its own butt, rather than reporting such a negative occurrence to the client.
I learn something new every day, but not everyday!
I've learned to never trust spell-check or my phone's auto-fill feature.