Ask Our Experts

We applaud your efforts to provide the very best for your baby, but know you sometimes have questions or concerns about breastfeeding or pumping. Our Certified Lactation Counselors and child experts are here to help you and offer support. For specific Lansinoh product usage questions, please contact customer service by email or (800) 292-4794 between 8am-8pm est.


Split Nipples


My baby is 15 weeks old and we've been doing fabulously at nursing. When she was 4 weeks old, I returned to work due to financial reasons. I have been using the same pump the entire time. Recently, in the past 2 weeks, it seems like my nipples are much drier than usual. They are peeling and splitting every time I turn on the pump, unless it is on the lowest possible setting. I apply lanolin after every pumping, but its not helping it seems. I treated with Monistat thinking it was thrush, but the problem is still continuing. I only have pain when pumping, there is zero pain while nursing. Any ideas what could be the cause?



It is possible that the flanges of your pump are not fitting you properly. The size of your nipples can change during breastfeeding and pumping and even if your flanges fit well before they may not now. When your nipples are drawn into the tunnel part of the flange they should move freely in and out, not touching or rubbing at all along the sides of the tunnel. If you notice your nipples touching the sides this would indicate that you need larger flanges.

All the best,

Molly Petersen, CLC

Photo of Molly Petersen

Molly Petersen

Certified Lactation Counselor