It’s normal as long as it’s not leaking blood or fresh red blood stains on the inside. My baby had that too.
My daughter had the same thing after her umbilical cord came off. Her pediatrician said it was normal as long as it didn’t start to smell bad seem painful to the touch or get super red.
I had this issue with my newborn and called the pediatrician. My babies was actively bleeding though. They said to just put pressure on it to stop the bleeding and as long as it was excessive that I didn’t need to come in. A little bleeding is normal. Just keep an eye on it and keep it dry. It ended up falling off about 4 days later.