Breast tenderness in late pregnancy is not a sign of impending labor. Breast tenderness in late pregnancy is generally normal, because the increase in the secretion of large amounts of estrogen and progesterone in the body during pregnancy will stimulate the development of the mammary ducts, mammary gland follicles, breast tenderness, breast hyperplasia, in preparation for future lactation, is not necessarily a harbinger of the birth of a baby. Usually, only abdominal pain and vaginal bleeding or water breakage is a sign of labor. Most pregnant women will have regular false contractions in late pregnancy, which are characterized by uncertain duration, uncertain interval, and no obvious pain, and will gradually ease or disappear after rest. In the late stages of pregnancy, the sign that a pregnant woman is about to give birth is the appearance of regular contractions, and the contractions are getting stronger and stronger, and each contraction lasts 30 seconds or more, with an interval of 5-6 minutes, or a large amount of vaginal water is also a precursor to labor, and then the pregnant woman needs to go to the hospital in time to wait for the birth of the baby. During pregnancy, pay attention to rest more, at the same time should relax, avoid tension, anxiety, any discomfort should be timely to the hospital, by the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.