It took me 2 weeks for the pain to go away, I had cracked and bleeding nipples, but its because my son wasnt latching right, so it definately took some time
Yeah it's a weird feeling to get use to but each day your nipples will kinda toughen up.
It's just day one for me and even after they helped him latch my nipples were really sore @mimiz @sk216
mine was just slightly uncomfortable for the first 3 days, like @mimiz said, make sure the baby is latched on correctly.
Try getting lanolin it helps so much