Should I cover the hole with anything. Not sure that it is moving now.
For any chance of survival you have to cover the hole, bacteria will get in it and depending on if it's seeping any yolk there wouldn't be a chance of survival, however if there's just a little bit of blood not worry it's still a possibility it can make it. But if it's bleeding a lot, there isn't. Best thing is to apply pressure get the blood to stop if it hasn't already and cover that hole, you have to get it out from under neath mommy, the shell is weak and chances are it will get swooshed. Not on purpose by accident because mommy knows it's not time yet and will continue to keep all her weight on that shell..
Get a cotton ball and apply tape, or candle wax it excellent use what you have to cover that hole..