BELLY BUTTON

Technically Madison can be considered a new baby, but perhaps she is no longer considered a 'NEWBORN' because she lost her umbilical cord. She now has a 'bellybutton' sort of. She is still wearing NEWBORN clothes and diapers, so maybe we will continue to call her a NEWBORN until she graduates into bigger clothes and is able to actually hold up her head.
I bought a baby book that discusses all of baby's accomplishments when, where, and what. I was curious is saving the bellybutton plug a thing to do? It seems a little weird, and it is hard to believe it doesn't hurt.