Long story short: Chick's shell accidently broken a day or so prior to expected hatch date. The chick is alive and doesn't appear injured. The only visable issue is the yoke sac does not appear to have entirely entered the abdominal cavity. There's still some stringy bits of it hanging out of the navel. I am worried that this is going to get infected. I have wrapped the chick in a clean facecloth soaked in saline solution, after flushing the outside of his body with it. I was careful not to put any water pressure on the navel itself but cleaned the entire area to the best of my ability. Is there normally some stuff left outside or did it not get fully absorbed? Does this make any sense?