Mouth Rinsing question for lip piercing.

I just got a piercing on the corner of my lip yesterday, it's a flat back labret stud. My main concern I'm trying to figure out is how often should I rinse my mouth and with what? I know to rinse after eating or drinking anything but water but I'm confused if I should just use purified water to rinse after eating and mouth wash in the morning and at night, I keep finding a bunch of different answers online. Any help with this is appreciated.