Your baby's umbilical cord is attached to the placenta which is attached to your uterus. Your belly button has nothing to do with it. That is where you were attached to your umbilical cord. Your belly button is sore or throbs because the skin there is very thin as you get bigger. Baby's movements can cause the area to feel bruised.
Then what causes my belly button to throb?
Never heard of this either
I never heard of this! They aren't connected you know!?