I have a calcium stone just behind my belly button, there is a tube that goes from your bladder to your
belly button and this is where it was found. I get stitch like
pains in a line down from my belly button, it causes me to have bladder problems and i cant exercise without gettin stitch within 2 minutes. The told me it was because there was a build up of calcium in the umbilical cord when i was a baby and when it was cut it was left behind.