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.D., an assistant professor of obstetrics and gynecology at NYU Langone Medical Center, tells SELF. Here's what you can expect from your set when you're expecting.
Long before you ever pee on a stick, swollen, achy breasts are one of the first early signs of pregnancy. And like nearly all pregnancy changes, you can blame it on hormones. "Breast tenderness is related to the increase in hormones and blood flow to the breast tissue," Leah Millheiser, M.D., an ob/gyn and director of the Female Sexual Medicine Program at Stanford Health Care, tells SELF. Specifically, during pregnancy your levels of estrogen and progesterone are on the rise, Dr. Shirazian says. Just like they can cause sore boobs during your period, they can bring the pain during pregnancy, too.