If the slightest rubbing on your breasts makes you jump, be patient—sore breasts are a common and temporary pregnancy symptom.
First of all, you should know that if your breasts are sore, they won't be the whole pregnancy. This symptom often disappears by the end of the first trimester. Thank goodness for estrogen and progesterone, which are the hormones proliferating in your body, especially during the first few weeks.
The reason for the swelling is simply to prepare your breasts for breastfeeding.
