Women can’t breastfeed without having children. When the male sperm forms a fertilized egg with the female ovum and deposits it in the female uterus, conception will be successful. After conception, estrogen, progesterone, and placental lactotrophin will rise, resulting in larger breasts, which will stimulate the hypothalamus when the baby sucks on the nipple, causing the release of prolactin from the pituitary gland and the secretion of breastmilk. If a woman is not pregnant, there will be no hormones in her body to stimulate milk secretion, and she will not be able to secrete milk and suckle on breastmilk. If a woman is already pregnant, although there are hormones in the body to stimulate milk secretion, but at this time did not complete the production, sucking breast milk will stimulate the uterus to contract, but on the contrary, the health of the fetus has a certain impact, so the woman did not give birth to children can not be sucked breast milk. If a woman who has not given birth to a child is breastfed and has discomfort symptoms, she needs to consult a doctor in time for the corresponding treatment.