After pregnancy, due to the role of estrogen and progesterone breast enlargement, and will also appear local slight swelling and pain, underwear selection is not appropriate to wear will feel particularly uncomfortable, it is recommended to choose cotton, no steel bra underwear, will not cause uncomfortable situation. Wearing underwear causes uncomfortable can also be used to touch the local breast, whether there will be nodules, lumps, nodules, lumps to the hospital in time to do the corresponding examination. It is recommended that you must not wear underwear when you sleep at night to ensure good local blood circulation, but also the primary condition for good breast care, during pregnancy must strengthen the local care of the breast, such as washing the breast every day.