The term “vacation” generally stands for menstruation. 39 weeks pregnant abdomen like menstrual pain may be prenatal irregular contractions. 39 weeks of pregnancy has reached the late stage of pregnancy and has been full-term, at this time the fetus has matured, if the lower abdomen pain discomfort. If the pain lasts for a short period of time and the intervals are long and irregular, then it may be prenatal irregular contractions, which can be relieved by bed rest or reduced activity, which can be observed on your own by counting the fetal movements. If the interval of lower abdominal pain is short and regular, or accompanied by premature rupture of membranes and vaginal redness, then it is a regular contraction before labor, and you need to consult an obstetrician in time to observe the progress of labor and changes in fetal heartbeat under the supervision of the obstetrician. So, if you have lower abdominal pain in the 39th week of pregnancy, it is an irregular contraction in late pregnancy, but if the contraction is regular or accompanied by redness and water breakage, then you need to consult a doctor in time. Of course, if you can’t tell whether the contractions are regular or not at home, you can consult the obstetrician at the hospital.