Question about changing a baby girls diaper?

Ok so with my son he would have blowouts and it would get everywhere front to back. I'd have to clean his penis and everything when he'd poop a lot. How do I do this with my daughter when she gets here? They always say wipe front to back but what if she poops a lot and it's in the front? Do I rinse her with water or what? I'm scared it's somehow going to get in her vagina or something and cause an infection...