text: Wow alot of these answers are horrible! \n\nYou are eating pizza and getting bloated and/or gassy. Everyone has certain foods that make them gassy or just make them feel not so good. For me, it's pop like coke or pepsi. For you, it's pizza. I would avoid pizza as much as you can. It might be the grease, it might be something else... depends what's on the pizza. I read one answer that said take a laxative.. wow.. k, don't do that... all that does is make you poop... alot. You can get some over the counter pills such as GasX... that gets rid of the gas for up to 12 hours. But I would just suggest avoiding eating things that make you feel this way. If they are really bad pains there could be a problem with one of these: gallbladder, pancreas, liver, aorta, kindey's or your spleen. So if they're bad, or it's causing you to have diareah, go to your doctor and they will send you to get a abdomen ultrasound and a G.I. series or barium swallow.\n\nHope this helped. Best of luck!