Last night around 9:30pm I started puking and having diarrea. It was continous for approx every 1 hr until 5:30pm. My stomach still hurts and I am afraid that if I drink or eat anything it will start again. I didn't eat anything unusuall in the past 24 hrs, just cereal, lasagna (I made and hadn't had a problem with), crackers and cheese, apple, a chocolate treat and homemade chicken and noodles. What do you think it is?? I also had my flu shot a few months ago.