Last week I cut off my fingertip with a knife. I tried for over 2 hours to get it to stop bleeding but couldn't. I went to the ER and they worked on it for a couple of hours as well. They put this "clotting" tissue on it, which now is dried onto the wound. Does that have to come off, or will it dissolve and my skin just close up over it? It wasn't sutured because it was the entire pad of my finger.