I just saw this. So sorry you didn't get a quick response.
I don't know that I can be much help as I have only done one hatch. Is there lots of blood? Or is it mostly "staining" as it lays on the towels or eggs? My chicks had that some and it alarmed me. Also, one did drag a shell around for a bit. The first one to hatch had a bit of bloody stuff in the shell and on her, but I don't think she was actively bleeding.
I see you are off line but I hope this all works out well for you. Let us know how it turns out if you can.