Infected ear piercing?

Peyton • Southern by the grace of God. ❤️
I think my ear piercing is getting infected. I've had it for about a month now. It's sensitive to the touch and there's white puss coming out occasionally. It doesn't hurt terribly bad though. I've had plenty of piercings but they've never been infected. So how do I care for it in order to prevent it from getting worse?