Suggest Remedy For Diarrhea And Bloated Stomach

MY STOMACH HAS BEEN BUBBLING ALL LAST NIGHT AND I FEEL WHAT I EAT DID NOT DIGEST, I HAD SEVERE DIARRHEA THIS MORNING AND EVEN NOW MY STOMACH IS SWOLLEN ROCK HARD AND I AM PASTING SEVERE WIND AND BURPING WHICH SMELLS LIKE ROTTEN EGGS. I WORK WITH YOUNG CHILDREN SO IS IT A BUG OR FOOD POISONING?