Here's how your breasts change throughout pregnancy and after Baby is born. Almost from the moment of conception , a woman's body starts preparing to breastfeed. Breasts are busiest in the first trimester. During these weeks, progesterone causes milk glands to develop and estrogen stimulates growth of the milk ducts. Breasts typically expand one or two bra cup sizes and veins get darker.
Take a look at each week of your pregnancy, from conception to birth, with our comprehensive email newsletters. Remember: check your email and click on the link in the Huggies welcome email to confirm your details. You'll need to activate to enter promotions -. Pregnancy is a time of transition for breasts.
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During pregnancy , you're likely focused on your growing belly and how your unborn baby's size compares to various fruits and vegetables "He's the size of a kiwi now! But there's another big bodily change that's going on: You're dealing with pregnancy boobs. From feeling like they're going to burst out of your old bras to watching your areolae take up more real estate on your breasts , it's an understatement to say that your set might go through a transformation. So, what's behind all of these dramatic breast changes? You guessed it: "It's all for lactation," Taraneh Shirazian , M.