It's fine for most women to go right on breastfeeding while expecting another baby, but you should get the green light from your doctor to be sure. When you breastfeed, your body produces the hormone oxytocin, which aids in the release of milk -- but it also signals your uterus to contract. So if you have a history of miscarriage, vaginal bleeding, or preterm labor, for example, your doctor may advise that you stop breastfeeding during pregnancy.
If it's safe for you to keep on nursing, know that you'll make plenty of milk at first, but toward the last few months of your pregnancy, your supply may decrease and the flavor may change (your milk is reverting back to colostrum, the thick, super-concentrated early milk that nourishes a baby in the first few days of life), since your body makes providing for the newborn its first priority. Some toddlers are not fazed by these changes and go right on feeding (in addition to their meals of solid foods), while others begin to lose interest and wean around this time.
Copyright 2009 Meredith Corporation.