This is a bra incubation:It can take up to 24 hours from pip to zip. I am concerned about the blood. A single drop of blood is quite a lot for a chick that is the size of a dime.
My advice would be to leave it alone. If it hasn't started to zip in 24 hours, you may decide to assist then, but be aware that chicks that have problems hatching usually have problems for reasons and often have to be culled or just don't survive no matter what you do.
Your chick should have hatched on day 17, so I suspect that your incubator's temperature was a bit low. Do you have a calibrated thermometer or three inside your incubator? What was the humidity (with a salt tested hygrometer)? Never trust the readings on the incubator. They lie.
https://www.backyardchickens.com/threads/bra-incubating.1659377/