Babies Breastfeeding Print Transitional Breast Milk Stage Medically reviewed by Medically reviewed by Meredith Shur, MD on December 22, 2015 Meredith Shur, MD, FACOG, is board-certified in obstetrics and gynecology, as well as a certified medical examiner. Learn about our Medical Review Board Meredith Shur, MD Written by facebook twitter Written by Donna Murray, RN, BSN Donna Murray, RN, BSN has a Bachelor of Science in Nursing from Rutgers University and is a current member of Sigma Theta Tau, the Nursing Honor Society. Learn about our editorial policy Donna Murray, RN, BSN Updated on June 29, 2019 Image Source / Getty Images More in Babies Breastfeeding As Baby Grows Challenges Pumping & Storing For Mom Baby's First Year Growth & Development Health & Safety Everyday Care Formula Baby Food Preemies Postpartum Care Gear and Products View All Transitional breast milk is the second stage of breast milk production. It's a combination of colostrum (the first stage of breast milk), and mature breast milk (the third and last stage of breast milk). When the mature breast milk begins to come in and mixes with colostrum, it's called transitional breast milk. When the Transitional Breast Milk Stage Begins Your breast milk will change from colostrum to transitional breast milk anywhere from two to five days after the birth of your baby. It may take a little longer for the transitional milk stage to begin in first-time mothers. But, for women who have had a baby and breastfed before, the transitional stage could start earlier. The transitional breast milk phase is the time that is often referred to as your milk "coming in." During this time, you may notice that your breasts are filling up with breast milk. They may become large, heavy, and swollen. If you do not notice your breasts filling with transitional breast milk by the 5th day after your baby is born, you should call your doctor. A delay in the production of breast milk can be dangerous for your baby. It can quickly lead to dehydration and weight loss. If your breast milk is not coming in, you need to find out what's causing the delay and correct it as soon as possible. How Long Transitional Breast Milk Lasts The transitional stage of breast milk starts at approximately the third day after the birth of your baby and continues until your mature breast milk is completely in at about two to three weeks postpartum. The entire transitional milk stage lasts between 10 and 14 days. What Transitional Breast Milk Looks Like Breast milk can be a variety of colors and tints. Colostrum is typically yellow or orange and thick in consistency. Mature breast milk is thinner than colostrum, and it's usually white, light yellow, or blue-tinged. Since transitional milk is a mixture of both of these types of breast milk, it can be any combination of these consistencies and colors. At first, it will appear more yellow and creamy. But, as the days go on and more mature milk is produced and mixed in, the transitional milk will begin to take on the appearance of the thinner, and whiter, mature milk. How Much Transitional Breast Milk You Will Make Compared to colostrum, which is only produced in very small amounts, the supply of transitional breast milk is much greater. You will go from making approximately two ounces of colostrum a day on the second or third day after your baby is born to making somewhere around 20 ounces of transitional breast milk a day by about a week later. What Transitional Breast Milk Is Made From Transitional breast milk is a combination of all the nutrients and health properties that make up colostrum and mature breast milk. It contains all the nutrition that your baby needs. As it changes from colostrum to mature milk, the amount of protein and antibodies in transitional breast milk begins to go down a little bit. But, the amount of fat, sugar, and calories increase. These higher levels of fat, sugar, and calories help your baby to gain back some of the weight that was lost in the first few days after birth. Breast Engorgement During the Transitional Milk Phase Breast engorgement is a normal and common experience during the transitional breast milk stage. It usually starts during the first week or so after childbirth, and it's the result of the sudden increase in the amount of breast milk that you're making. Here are some tips to help you get through breast engorgement during the transitional milk stage. If you breastfeed very often during the first two days after your baby is born, the symptoms of breast engorgement may not be as bad.It may be harder for your baby to latch on and breastfeed if your breasts are very engorged. Large swollen breasts can flatten the nipples and tighten the skin on the breast. To make it easier for your baby to latch on, remove a small amount of breast milk before you breastfeed to soften your breasts.To relieve the pain and pressure of breast engorgement, you can try to use a cold compress or cold cabbage leaves. You can also pump or hand express a small amount of breast milk. If you are still in too much pain, talk to your doctor about taking a pain reliever such as Tylenol or Motrin.Breast engorgement can cause a fever. If you get a fever, but you do not have any other symptoms or any other reason for a fever, it could be the engorgement. This type of fever is sometimes called a milk fever.Try to remember that the breast engorgement experienced during the transitional milk stage should not last that long. You should begin to feel better within a few days or a week as your breast milk supply adjusts to your baby's needs. Encouraging a Healthy Breast Milk Supply Your body will make transitional breast milk, and your milk will "come in" whether you choose to breastfeed or not. But, even though your body will make breast milk automatically during the first few weeks, it will slow down, and production will eventually stop if you don't put your baby to the breast or pump. Therefore, to establish and maintain a healthy breast milk supply, you should breastfeed your newborn every two to three hours throughout the day and night (eight to twelve times a day). Breast Milk Stages, Composition and Taste Was this page helpful? Thanks for your feedback! Track your baby’s most exciting moments with our milestone checklist. Get it free when you sign up for our newsletter. Sign Up You're in! Thank you, {{form.email}}, for signing up. There was an error. Please try again. What are your concerns? Other Inaccurate Hard to Understand Submit Article Sources Verywell Family uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial policy to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. American Academy of Pediatrics. New Mother’s Guide To Breastfeeding. Bantam Books. New York. 2011. Hassiotou F, Geddes D. Anatomy of the Human Mammary Gland: Current Status of Knowledge. Clinical Anatomy. 2013 January 1;26(1):29-48. Lawrence, Ruth A., MD, Lawrence, Robert M., MD. Breastfeeding A Guide For The Medical Profession Eighth Edition. Elsevier Health Sciences. 2015. Riordan, J., and Wambach, K. Breastfeeding and Human Lactation Fourth Edition. Jones and Bartlett Learning. 2014. Continue Reading