When does your milk come in?

Kate

I’ve been hearing a lot of moms say it doesn’t come in until after baby is born, but then I read about the importance of breastfeeding within the first hour after birth to help with post partum bleeding and bonding with baby. Will I be producing colostrum when baby is born? Or does that take a few days to come in as well? I know everyone is different, I’m just confused. 🤷🏻‍♀️