Pregnancy often changes the size and shape of a woman’s breasts. The tissue naturally expands and often shrinks following childbirth and breastfeeding. If you become pregnant after you undergo breast augmentation, you run the risk of altering aesthetic results. Depending on the incision route you chose, breastfeeding may still be possible with implants and won’t affect milk in any way, but let your plastic surgeon know if future pregnancies are in your plans.