Pacifier for breast fed baby

Aja
When did you give your baby a pacifier? My son nurses so well I don't want to mess it up but when he goes to sleep he wants to suck on his hand (he's fed so it's not that he's hungry) and the second his hand moves he fusses. If I let him suck on my finger he sleeps so much better so I want to give him a paci but I feel like I have to wait.. He's 13 days old.