Sounds like you are having excessive (more than physiological amount) peritoneal fluid, also known as ascites. Many potential causes for ascites, but most common ones are related to the digestive system. You're also having a pain in the lower right quadrant, which could be the cause. I feel you need to have some lab tests of the fluid and abdominal CT as soon as possible to find out what's causing all these. I would consult a gastroenterologist or internist.