I seriously have never been in so much pain. It was the nost viokent gastrointestinal issue I ever had. Comparatively, the appendix exploding hurt less although it was similar. Strangely, unlike bacterial or viral food poisoning I was fine several hours after puking my guys up.
The next day, I investigated everything I ate the night before and I found the culprit. The raspberries I bought from Wegmans the night before were thoroughly infested with white/gray mold and I didn't notice when I ate them with my dessert. It was dark in the kitchen so I just grabbed a handful from the fridge without inspecting. Big mistake. Who does that? I feel like such an idiot. At the same time paying $3+ for raspberries I bought the night before, I didn't expect they would have gone bad. I might never eat raspberries again.
Since then I systematically tried each and every other thing I ate that night with no problem. I threw the raspberries out. I should have brought then back to the store.

It was seriously the worst experience I could imagine. I was literally shaking and twitching on the floor.
I wonder if washing would have helped? Would one notice the mold and would it have been washed away? Good to at least know what caused it.....
I was pretty relieved that you found out what it was. That box had berries that were completely covered in spores on the inside. It was scary looking. Maybe you should put boxed berries on your always-wash-before-eating list. I wash berries too, but just once and twice if I am freezing them (unlike the obsessive compulsive washing of greens).