My doctor suspected a leak, I have done nearly endless research on these pains and it all pointed toward a leak. My doctor had me go in for CT scans with contrast that I drank, digested for an hour and then they perform pelvic CT scan. When the leak was first detected, they put me on two strong antibiotics to prevent an internal infection for a few months however now I am just stuck dealing with the leak. It’s a leak at the site of connection. however anytime anything passes by liquid or gas.. I experience these pains. I suggest avoiding coffee, sugars, dairy, maybe gluten... Anything that causes gas, even a piece of candy.. will cause you enormous pain later on (My biggest enemy has been sugar-free anything, any fake sugar causes serious gas). Seriously, try releasing gas laying down.. that has been my only temporary relief! Ginger tea and hot baths can help with this. Also the the less I move around the more I tend to experice these pains, get your body moving. A short walk once a day can help digestion a lot too.