Unless your doc tells you your pregnancy is high risk, you don't need to stop. Lots of women nurse through their pregnancies, and even tandem nurse (which is having both kids nurse)! Be advised, your milk may change flavors, and the baby may reject the breast, but you can keep trying. If baby is hungry, she will eat. You will need to up your calories a little (as in 100-300 calories over the course of your pregnancy), and make sure you're taking a prenatal vitamin. Make sure your foods are nutrient rich, too. Lots of fruits and veggies, whole grains, and lean proteins.
Conceiving that early does not in and of itself make a pregnancy high risk. If your cervix is not up to task (incompetent cervix, meaning it is weak and not holding a pregnancy well), then the oxytocin, which stimulates contractions, that breastfeeding releases can complicate things. I would talk to your doc just to get the final word. Good luck!
at 3:13 AM on Aug. 9, 2009