Girls, hi ?? Has anyone's babies "bloomed"? How long will this last? …

Girls, hi ?? Has anyone's babies "bloomed"? How long will this last? Our daughter started showing signs around day 21-22, first as red spots, then pustules similar to pimples appeared. They constantly change their location, popping up there and here. Now her whole face is covered in small pimples (some have moved onto the neck and hair). She has been eating the same way she always does, read so much about allergies, but it doesn't seem like that. Now I'm wondering when all of this will be over and will there be any marks left after this?