What does this mean????

lexi 💋 • Muva to my angel Aiden 👼🏽🙏🏽 and my sweet babygirl A'Laya 🧸💗 A.K 🤞🏽💋

So as I was taking off my 11 day old baby diaper this came off I don't know what this means her umbilical cord is still there it's just the tip that come off ... idk if it's a bad thing orrr I'm freaking out😳