How long before breasts start to swell in pregnancy

A woman will gradually experience breast tenderness around 6 weeks of pregnancy, which usually lasts for about 40 days and may be severe enough to last throughout the pregnancy.
During pregnancy, various hormones such as estrogen, progesterone and prolactin are secreted in large quantities. Especially in the 6th week of pregnancy, the increase in hormone levels will promote the proliferation of breast ducts and the development of breast follicles, so pregnant women may feel their breasts are swollen and even painful, which is all in preparation for the upcoming breastfeeding.
Usually, breast swelling occurs in the early stages of pregnancy, and hormone levels gradually stabilize in the later stages, and the swelling will gradually improve. However, there are many pregnant women who are still experiencing swelling and pain in the seventh or eighth month of pregnancy, accompanied by lactation.
In addition, in addition to breast swelling and pain, most pregnant women will also appear breast enlargement, areola color darkening, areola nodular small bulge, these are normal physiological phenomena.
It is recommended that women wear soft underwear during pregnancy and pay attention to the hygiene of the breasts, nipples and areolas, and clean them more often to prevent obstruction of the milk ducts. If the swelling and pain is obvious. You can use a hot towel to apply hot compresses to the breasts to relieve, if the swelling and pain still persists after applying hot compresses, you need to go to the hospital obstetrics and gynecology department in a timely manner.