Im not sure if it causes pain or not? How would you know from a baby anyhow? They cry for all sorts of reasons.
Im just trying to find out what people who have dealt with it experienced, to see if real life experiences tell anymore than what Dr Google says.

He does have costipation issues though... needs a lot of water, even when he was BF no solids he got bunged up frequently.
The Dr at the hospital pressed on his tummy while he was lying down - would this be her checking for a hernia?