I struggled with latch for the first couple of weeks due to my large flat nipples and my son's high arched palate. His latch is now totally comfortable but I've got a huge fissure in my left nipple that developed in the second week of nursing. He's 6 weeks now. I've tried mothers love and APNO ointment, hydrogel pads, air drying, breastmilk, pumping on that side to give it a break, and cleaning with a diluted hydrogen peroxide solution. Nothing works. Even the pump reopens the crack every time. I am allergic to lanolin so that's out. This crack is huge and terribly painful. Any ideas on how to heal it? I've already been to an LC multiple times. My nipples are not otherwise red, flaky or cracking, though the inside of the fissure is of course red and sometimes bleeds.