Ay anak, I'm sorry you're going through this, that's really painful! Please see your doctor or go to a clinic asap para malaman kung ano talaga ang nangyari at ma-treat properly, especially since you're breastfeeding. Hindi ka dapat mag-alala mag-isa about this; yung few mum friends ko, naka-experience din and the doctors helped them get better quickly. In the meantime, you might want to try Mama's Choice Nipple Cream, it's safe for baby and designed to help with nipple issues, and some of us swear by it habang nag-heal. But please get checked first, ha? You and baby deserve proper care.