1, early pregnancy breast physiology: from about 6-7 weeks after pregnancy, the breast gradually swells up, very soft, and the blood vessels under the breast skin become obviously prominent. The nipple will also gradually become larger, and the areola color will deepen due to the increase in pigmentation. The mother-to-be will start to feel discomfort in her breasts: swelling, tingling or pain when touching, and some heaviness when walking. Health care: Hot compresses and massages can be used to relieve breast discomfort. Massage your breasts gently with your hands every day to promote breast development. Bra: At this stage, it is important to use a bra that is appropriately loose and tight, preferably adjustable, to hold up the breasts well, but also to avoid over-tightening the bra to rub the nipples and produce discomfort, and to make appropriate adjustments as the breasts and bust grow. When resting after sleeping, it is best to remove the bra, which is conducive to the blood circulation of the mammary glands. 2, mid-pregnancy breast care: at this stage, the breasts will continue to increase in size and the discomfort will disappear. Expectant mothers who are pregnant for the first time, the nipples will be more delicate and sensitive, and often cannot withstand the repeated sucking of the baby during breastfeeding, and will feel pain or strange itching. To prevent this from happening, you can start doing some preventive work from pregnancy. Nursing: Starting from 5-6 months of pregnancy, you can scrub your nipples once a day with warm water and a clean towel, paying attention to scrubbing the crusts of secretions accumulated on the nipple, and then you can rub a little baby oil on the surface of the nipple, which can enhance the elasticity of the skin and its ability to receive stimulation. Correction: The normal nipple is cylindrical and protrudes from the surface of the breast. If the nipple is inverted, it may cause difficulty in breastfeeding after delivery. However, most moms-to-be with inverted nipples can change their nipples with proper correction starting in the 4th month of pregnancy. Correction of nipples is limited to 4-7 months, i.e. 16-28 weeks. Methods: Place both thumbs near the area of the inverted nipple, press down on the breast with moderate force to highlight the nipple, and then gradually push it outward from the position of the areola, do this 4-5 times a day early in the morning or before going to sleep, and when the nipple is slightly protruding, gently pinch the root of the nipple with the thumb and forefinger and pull it outward. Bra: The size has increased by about one or more sizes and should be replaced in time. 3, late pregnancy breast care: the size of the breasts continue to increase, the distance between the nipples also continue to increase, but before delivery, the rate of breast enlargement instead of slowing down. Nursing care: normal cleaning and nipple massage. Bras: In the later stages of pregnancy, make sure to use large bras that do not compress the breasts and wide straps so that they can effectively pull up the weight of the breasts; choose full-cup inclusive styles, preferably with side lifts and soft steel bra supports, which can hold the breasts up towards the top of the inner side to prevent spillage and sagging. Nipples become sensitive and fragile, and there may be milk secretion, if necessary, you can choose breast pads to protect. Women’s breasts, especially the nipple is a very sensitive part, so in the care and correction, must be appropriate force, so as not to cause contractions. 4, how to choose pregnancy bra? Convenience: the underwear of the mother-to-be should first of all be easy to clean, easy to put on and take off, especially in the late stage of pregnancy, it is best to choose the clasp in the front. Fabric: comfortable, sweat-absorbent, breathable cotton texture is ideal. The color tone should choose bright and light colors, such as white, pink and light blue. Quantity: Every two months is a stage, and each stage should have at least two sets of underwear. If the breasts change rapidly, they should be changed at any time. Comfort: During pregnancy, it is best to use full-cup bras without steel rings. Straps: It is very important that the bra straps fit properly. Try to choose wide straps, and the right bra straps should fit snugly around your shoulder blades and should not feel constricting. When trying on a bra, you can raise your hands or shrug your shoulders to see if it will fall off too easily or if there is any discomfort. Safety: There have been studies that have found that some mothers-to-be have less milk, which is related to wearing underwear improperly, causing fine fibers to enter the milk ducts and cause blockages. Therefore, do not wear bras that are too tight during pregnancy. Don’t wear chemical fiber clothes or woolen clothes close to your body. Cleaning should be separated from other clothes, and the fibers attached to the inside of the bra should be shaken off before each wear. 5, after pregnancy should also be regular self-test: a monthly breast self-test, is also necessary to ensure breast health during pregnancy. (1) You can choose to stand in front of the bathroom mirror before taking a bath, and carefully observe the appearance of each breast, the size, skin color or nipple color changes, whether there is eczema on the breast, or whether the skin has bump marks, whether there is a difference in the height of the two nipples, and whether there is any liquid coming out of the nipple. If there are obvious changes in your breasts, you need to pay attention. (2) Raise your arms above your head and look carefully at both breasts, observing the specifics as above. (3) Lower both arms, insert both hands into the waist, both elbows strive to the back, so that the chest muscles are taut, and observe whether both breasts are equal and symmetrical, and whether there is any abnormality in the nipple, areola and skin. (4) You can also use the touch method, lying flat on the bed, the right arm raised above the head, can be in the right shoulder under a soft pad, so that the right side of the breast into a horizontal state. The four fingers of the left hand together with the palm of the end of the finger clockwise pressure, check whether there are lumps or other changes in various parts of the breast. Then examine the left breast in the same way and compare the difference between the right and left breasts.