Some women experience leaking from their breasts during the first three to four weeks of pregnancy. However, this is not that common. It is, however, more common for some women to show leaking breasts between the 12 th to 14 th weeks or by the end of this trimester.
If your breasts are leaking fluid while you're pregnant, don't worry, it's completely normal. The fluid is the first rich milk your breasts produce, called colostrum. - BabyCentre UK.
Potential Causes and Concerns of Leaking Breasts Leaking breasts are generally caused by over-production of the female hormone prolactin, which is usually only highly stimulated during late-stage.
Jun 28, · Leaky breasts may occur during the third trimester of pregnancy, when your breasts may start leaking a thin, yellowish fluid called colostrum. This is the first milk your breast will produce in preparation for your baby's arrival.