Newborns and pacifiers

So my little guy is a week old today and we, really just today, started giving him a paci to fall asleep for night time. So that I can sleep for a few hours before having to wake up to feed him. Is a week old too young to give a nuk?? He's doing pretty well with breastfeeding, I do use a shield due to my flat nips but I don't want to be ruining his teeth already. Thoughts?