I finally cut my babies finger by accident

😭😭😭😭😭😭 I knew it was going to happen sooner or later. I try to be SO careful 😩 I did it while he was sleeping but i slipped on his little tiny pinky and nicked part of his skin! He cried for a second and feel right back to sleep. I can't stop imagining what I did to him 😭 it looks like a tiny paper cut. I'm probably over reacting but will it get infected? Should I clean it or put some sort of ointment on it??