Milk coming in .. Help!

Sarah • First time mom, expecting Audreigh Anne July 6th 🎀👶🏼✨
It's day 4 of being home from the hospital, and my milk supply just started coming in. I woke up at 6 am this morning because they are literally in so much pain (I'm bottle feeding), does anyone know how to deal with the pain? I know they'll dry up in a few days, but for right now, they're killing me 😭