I don't know if chicks even have umbilical cords, but there is a strong string, looks yolky with a red line guessing some sort of vein. It is coming out of the chicks stomach and attached to a hunk of yellow yolk still stuck to the shell. The chick is breathing, but can't really move around. Every time it tries the umbilical cord pulls and it falls down, tripping over the shell. I know you're not supposed to open on lockdown, but I only have 2 eggs left that haven't hatched. Do I open it up and cut it? I don't want to make it worse, but he seems like he's really struggling. I've never seen anything like it before. THANKS!