my 2 year old has stomach pain and pain when he tries to go number pee and poop. He was throwing up and had a fever for 2 days before the pain started and the doctor tested him for bladder and kidney infection, kidney stones, did blood work, xrays, ultrasounds and cant find anything wrong. all they said is he was dehydrated but the hydrated him and sent us home and its still the same if not worse. he is screaming when he goes to the bathroom so I know something is wrong. Please help, I dont know what else to do for my baby.