Random advice from a stranger with no medical training-

1) make sure you are hydrated. Do not hesitate to go to urgent care to get checked out. Food poisoning is no joke.

2) i have had great luck with Pearls brand probiotics. The small pills are extra-duty thickly (enteric) covered, to pass through your stomach to release in your intestines to be most effective. They come in a blue box; widely available; have found them everywhere from the Vitamin Shoppe to WalMart). What i think is happening is you are flooding your gut with better bacteria to hopefully outpace any bad bacteria from the food. When in “trouble”, i have taken two at once. One time when i was having similar symptoms it stopped the problem immediately. Another time it seemed to have no effect (assuming it was a bacterial issue when it was effective, but a viral issue when it was not).