Hindi dapat dumugo ang nipple mo when pumping, sis, that's usually a sign na may irritation or cracking na nangyayari, kaya best to check with your doctor para sure kung ano ang cause at baka kailangan ng adjustment sa pump settings or technique. A few of us moms found na using Mama's Choice Nipple Cream (it's pregnancy and breastfeeding-safe!) after pumping really helped with healing, plus proper latch and making sure the flange size is correct, sometimes yung issue ay doon lang talaga. Hang in there, pumping can be tricky sa simula but your doctor can guide you better on this!