Uy, I understand your worry! Para sa ganitong concerns about baby's umbilical cord, mas safe talaga na tawagan agad ang pediatrician or OB mo, lalo na may dugo, better to check lang to be sure. Kahit konti, mas peace of mind if ma-confirm ng doctor na normal lang. One of my mum friends din nag-alala with the same thing, at sabi ng doctor niya, important lang na clean at dry ang area. But please do reach out to your baby's doctor asap, ha?