Bloating, cramps, and stomach pain after eating cauliflower and beans might occur if your digestive system is unable to function properly. They can lead to gas production, which in turn, can make your belly quite firm and you may feel uncomfortable. Try to stay away from these foods for the moment and drink a certain amount of water to see if your symptoms are relieved. If the situation persists, you can consider consulting a gastroenterologist for some additional guidance.