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More on Pregnancy

Pregnancy Week by Week
(First, Second, and Third Trimester) (cont.)

Breast changes

During pregnancy, you might have:

A woman's breasts increase in size and fullness during pregnancy. As the due date approaches, hormone changes will cause your breasts to get even bigger to prepare for breastfeeding. Your breasts may feel full, heavy, or tender.

In the third trimester, some pregnant women begin to leak colostrum (coh-LOSS-truhm) from their breasts. Colostrum is the first milk that your breasts produce for the baby. It is a thick, yellowish fluid containing antibodies that protect newborns from infection.

What might help:

  • Wear a maternity bra with good support.
  • Put pads in the bra to absorb leakage.

Call the doctor if:

You feel a lump or have nipple changes or discharge (that is not colostrum) or skin changes.