The hospital only has disposable earrings, which are punched directly. After 3 days, you can change the earrings you want. It is best not to let the punched part contact with water for 3 days to avoid inflammation. The best way to solve inflammation is to go to a general drugstore and buy a small bottle of erythromycin cream for 50 cents. Just touch it when it's inflamed!
It is generally not inflamed.