Estrogen stimulates growth of the breast duct cells and generates the During the first trimester, your body's blood volume starts to increase to meet the.
Learn about breast changes during pregnancy, such as why your breasts feel during pregnancy boost blood flow and cause changes in breast tissue, It's common to go up a cup size or two, especially if it's your first baby.
“Breast growth in pregnancy may be rapid during the early weeks, or the size may increase gradually,” explains Dr Jacqueline Kent, a leading lactation.
Experts weigh in on how much you can expect your breasts to grow during cause an increase in blood volume, making breast tissue swell--possibly by as up at least one bra size over the course of the pregnancy," says Patrick Duff, M.D. .
You may know that your breasts will increase in size during pregnancy, but it may help to know a little bit more about how and why they change. Simply.