So frustrated 😞

My baby girl was born on Wednesday and I've managed to breast feed her until Friday evening because my nipples are so sore and they are bleeding. I have fed her formula for the past 2 days.. How can I make my milk come in to make breastfeeding a bit easier? It's not her latch, it's my skin condition that's making it so sore but at least I can express my milk. Please help, it's really upsetting me