Any idea what Gastroenteritis is? Is it worse than a regular tummy ache?

Just as what Hui Qun had described, and it was just horrible. I literally parked myself next to the toilet bowl because I was either vomiting or pooping or both. By the end of it, my body was shaking because of the fever and I was feeling so weak from all the puking. I much prefer the regular tummyache to this.