Rinse them well. Disposable diapers may have perfume. This makes some babies break out in a diaper rash. Always wash her from front to back so that she doesn't get an infection. Wash her from top to bottom.
Some baby girls have a little pink discharge from the vagina.
This is normal for the first few days. If the baby has a rash, let her bottom air dry after each diaper change. Keep her diaper off and put her on a waterproof pad for several minutes. Zinc oxide can be used on the baby's clean, dry bottom. Do not use powder since it can make the rash worse.