On Friday I noticed that my left nipple had a crack in it. I applied Lansinoh and it has been healing. But today I noticed more cracks on the same nipple. So I'm wondering, could my baby be biting down on just that side? The right nipple has no problems at all so I'm having her nurse on the right first and left second just to have less pressure on that nipple. That nipple has always had more pain since I started nursing my tiwns, but the cracks are new.