There is no authoritative data to show how many months pregnant women will have breast milk, most women will have breast milk secretion in 4~10 months of pregnancy, and some women will have breast milk secretion only after delivery. It is not possible to generalize how many months pregnant women will have breast milk, it needs to be judged according to the woman’s physical condition, some pregnant women will have breast milk secretion too early, may be in 4~5 months when massaging or stimulating the nipple, breast secretion of watery breast milk. Generally, pregnant women will not secrete milk until they are 10 months pregnant. There are also some women who do not secrete milk during pregnancy, but will appear to secrete milk after delivery. The breasts usually produce milk 4 to 10 months after pregnancy, but some women do not produce milk during pregnancy. It is recommended that women avoid squeezing their breasts when lactation occurs and need to wear loose-fitting underwear and change it frequently. In addition, you can wipe your breasts with warm water every day to keep the breast area clean and dry. When abnormalities occur, consult a doctor promptly.