Some of the first signs of pregnancy are breast and nipple tenderness. This is because even during the earliest stages of pregnancy, your breasts are getting ready to breastfeed.
Most women’s breasts and nipples change during pregnancy. These changes include:
your breasts and nipples enlarging
your nipples and areola (the skin surrounding the nipple) darkening
veins in your breasts becoming more obvious
your breasts feeling heavier
From the start of your second trimester, your breasts may start leaking colostrum. This is thick and yellow in colour at first. As your pregnancy progresses it will become almost colourless.