Is ther3 any thing i can do now
There's an answer on your other thread. I'll copy it here too:
It's the umbilical cord. What happened is that the chick didn't fully finish taking everything in and didn't close up all the way. If there are other chicks in the incubator, find a way to separate that chick so it doesn't get attacked, and otherwise leave it alone. It ought to be okay(although it'll most likely have a scab for a while) so long as everything leaves it alone.