If milk appears in the 5th month of pregnancy, you should first determine whether it is milk or nipple overflow, if it is milk it is a normal phenomenon, if it is overflow consider it as an abnormal phenomenon, you need to further clarify the cause and exclude any inflammation and tumor disease. 1, normal milk: milk appears in the 5th month of pregnancy, mainly related to the change of hormone level in the body after pregnancy and personal constitution, pregnant women during pregnancy, because the hormone level rises, resulting in Lactogen rises and stimulates the growth of mammary glands, squeezing the breast can have a small amount of milk secretion, which is a normal reaction during pregnancy. If milk appears, you can wash it with water every day, then gently wipe it with a clean soft towel and apply anti-cracking oil on the nipples; 2. Abnormal nipple overflow: cystic lesions of breast hyperplasia and breast cancer can be seen as nipple overflow, which can appear as yellowish and bloody overflow, accompanied by breast lumps and enlarged axillary lymph nodes and other symptoms, which should be treated by a doctor in time to clarify the type of disease and treat it in time.