A mom whose 8 month old bit her nipple which is now cracked and bleeding (when the scab falls off) is afraid to breastfeed on that side because of fear of her blood (RH-) mixing with the baby's blood (RH+). Doesn't blood mix through the placenta?? I can't see how this could be a problem; after all, breastfeeding in the postpartum period with cracked nipples is fairly common, and I've never heard of contraindications in the case of RH factor. The mom says she received 3 injections (Rhogam??) during pregnancy and was told that her blood and the baby's blood shouldn't mix. Is there a reference I could quote to this mother? TIA Pearl Shifer, M.Ed., IBCLC [log in to unmask]