Wakes up screaming at night

Darla

My four month old wakes up after being in bed for half hour screaming in pain. He usually has to fast or burp and then he's good. But now wide awake. Is there anyone that has gone through this that has suggestions. He's got a kidney issue that doesn't allow his urine to pass as fast as the norm. I'm guessing it's that or colic. Please help.