Day 3 after giving birth - baby is a milk monster and keeps latching every 1 hour, each latch abt 45 mins. And my nipples are damn sore already. What to do?

Check the latch. If your baby latches correctly, your nipples shouldn't hurt at all. It could be taking longer because of your baby's improper latch. He suckles longer because he isn't full yet. Use your hand to cup the side of your breast so it looks like a sandwich and place it in baby's mouth. Continue latching your baby. Your body will regulate the milk supply. It is common to have oversupply when you first start lactating. http://www.babycentre.co.uk/a8792/how-to-breastfeed-pictures