Girls, hello! Can you please tell me who has treated nipples while bre…

Girls, hello! Can you please tell me who has treated nipples while breastfeeding? Mine haven't healed for days, it's very painful and I can't give my baby even though he wants to suckle. I'm already crying for two days now, trying everything but nothing helps. I'm giving him through a bottle, but my little one wants to suckle from my breast. What should I do?