What are the sentences that describe stomachache?

a sharp pain oil suddenly rises, which stimulates my nerves. My stomach seems to be stabbed by ten thousand burning sharp knives, and a twining pain spreads all over my body. A burst of pain came to me like the tide of Qiantang River, wave after wave. I put my hands on my stomach, turned it over on the bed, turned it over, and my mouth squeaked with heartbreaking pain: "Ah-it hurts! It hurts-it hurts! " I feel like I'm rolling in hell. As if in a cloudless clear sky, I suddenly tore a hole. In an instant, the darkness pierced my heart and spleen like a sharp knife, spinning and stinging, and the pain suddenly occupied my stomach. After a while, the pain gradually disappeared. However, before long, another round of pain attacked my body. In an instant, my stomach was like a devil at work, tumbling over the river, as if there had been a "nuclear explosion" in my stomach. Suddenly, my stomach seemed to be run over by a double-decker bus < P >.