Just went to get my son out of his swing and I immediately noticed this big scratch on the side of…

Just went to get my son out of his swing and I immediately noticed this big scratch on the side of his face. I didn't notice it prior to putting him in there and I have NO idea what he could if scratched himself on. I checked out his toys and the seat and I cut his fingernails this morning so idk what it could be from but now he has this big red scratch on the side of his face 😣