My little guys waited 3 weeks before falling off. And it bled like that too. I just wiped it with a qtip with alcohol and it stopped after a few days. I think it happens when they cry and push the stomach out and it stretches the belly button and it's not totally healed yet.

don't use soap and water use alcohol mine did that too it just means it fell off a little early

clean it with a q tip and soap and water. If it gets ozzie and has puss call the doc