Tender and swollen breasts during pregnancy

Sore and swollen breasts are often among the first signs of pregnancy. Breasts grow throughout pregnancy, and you may go up at least one bra size. If you plan to breastfeed, you might need an even larger size.

Jenny Jansson

Read time: 2 m

Verified by Jenny Jansson

Certified midwife

Tender and swollen breasts during pregnancyPhoto: Preggers

Tenderness and Sensitivity

It’s common for breasts and nipples to feel tender. Some women experience pain from touch, while others notice increased sexual sensitivity. Tenderness usually eases after three to four months, but some women stay sensitive throughout pregnancy due to hormonal changes.

Breast Development During Pregnancy

Hormones from the placenta stimulate milk ducts and mammary glands. Around week 13, the areola becomes larger and darker as the body prepares for milk production.

Colostrum and Leakage

Colostrum, a clear or yellowish fluid, may leak during pregnancy. This can happen during sex or from pressure on the breasts. It’s completely normal and nothing to worry about.

Breastfeeding Premature Babies

Milk ducts fully develop in the second trimester (months 4–6), so even premature babies can breastfeed. Full milk production usually starts after delivery, typically on the second or third day.

Practical Tips

  • Choose a supportive bra that doesn’t press on tender breasts.
  • Accept that breasts may feel sore and swollen – it’s normal.
  • Colostrum leakage is natural and nothing to worry about.
Jenny Jansson

Verified by Jenny Jansson

Certified midwife

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