During pregnancy, the breasts vary greatly. The breast responds to some women very sensitive touches, so that at times, wearing clothes is a pain. After a few months, the body on the hormonal changes has largely set and it is significantly better.
Simultaneously with the increase in the hormones estrogen and progesterone breast begins to grow. This produces milk glands, tissues and blood vessels, which prepare the breast on the new task to the care of the baby.
Nipples OP