Changes in Breast Size Due to Pregnancy
As the body prepares for the birth of the child, the breasts begin to enlarge as they are preparing to first, make colostrum, a highly nutritional fluid ingested by the baby, and secondly, to produce milk. You will notice that the breasts do grow larger during pregnancy. They also remain larger during breastfeeding for the first few weeks or months. While the size may be noticeably larger at first, it is actually the pregnancy that causes the increased size and not breast feeding in itself.
When the milk first comes in, the breasts may become swollen with a large amount of milk. This is called engorgement. As the baby nurses, the swelling usually goes down. This can also be painful when the baby does not eat enough to ease the discomfort. As you continue nursing, your body will adjust to a supply and demand type situation, only producing what is needed by the baby. Over time, you will probably notice that your breasts will begin to return to their original per-pregnancy size.
Breast Size During Breastfeeding
If you choose not to breastfeed, after the engorgement period is over, your breasts will more than likely go back to their original size more quickly than if you nurse your baby. If you do choose to breast feed, they will remain larger for a longer period of time, however; the size will gradually decrease. You will just be putting off the inevitable.
Circumstances Under which Breasts may Remain Larger
Women who gain more weight during pregnancy, maintain a higher than usual weight may find that their breast size has increased due to this factor. Just as fatty cells build up in other parts of your body, they also conveniently collect in the breasts, giving you an increase in cup size, in most cases. As your body begins to return to its per-pregnancy size, your breasts will generally follow suit and return to their former size. This can be unwelcome news for ladies who were looking forward to gaining a cup size or two, but it can also be a cause to celebrate for women with larger breasts who may have been dreading the gain.
It's easy to understand how the notion of breast feeding will cause larger breasts. Nature almost tricks us by increasing the size, in some women, almost dramatically during the pregnancy stage. Even after delivery and often several months into breastfeeding, they may maintain a larger size. Eventually, even if breast feeding is continued, the breasts will return to their original size in most cases.