I have a calf that is a week and a half old. Ever since she was born her naval area has been sagging down from her belly a little bit. I am wondering if this is a hernia or just some of the umbilical cord that hasn't fallen off yet. When I felt it, it felt like a tube. I can't feel a hole to push it back into her belly. Please let me know what you guys think. If you see some red stuff around it, it's just betadine that I have been soaking her naval in.