The baby is 30 days old, everything has been normal with the umbilical…

The baby is 30 days old, everything has been normal with the umbilical cord so far. Today we received a call from the pediatrician and there were some discharge. Unfortunately, I don't have the pediatrician's number, we wanted to go to the hospital tomorrow, but I am worried. The baby's belly button doesn't bother her, I touch it, she reacts normally.