umbilical cord is this normal? TMI?

Marii β€’ mommy of 3 BOYS a 4yr and a 2yr old 1mo oldπŸ’šπŸ’™πŸ’™πŸ’™πŸ’šπŸ’š
So I was taking my baby's clothes off to put him in pj's and this blood was on his onsie and there dry blood when I touch it it doesn't hurt him but should I be worried ?