What does this look like to you?

He woke up with it. He sleeps in a rock and play and there was nothing in it with him I’ve checked it a few times. I cut his nails this morning so that could be the nick but idk what the black thing is. I tried wiping it with an alcohol wipe and it’s not coming off so it’s in his skin. It looks like a splinter or blackhead but I don’t see any broken skin to indicate a splinter. Has anyone seen anything like it?