Fetal oxygen deprivation in the fifth month of pregnancy usually does not cause stomach pain. Generally speaking, most of the fetal hypoxia in the fifth month of pregnancy does not have obvious manifestations, because at this time there is no clear pattern of fetal movement, it is difficult for pregnant women to feel through their own feelings of fetal hypoxia or not. Fetal hypoxia, the initial manifestation of abnormal fetal movements, if too frequent, then it is easy to cause contractions, resulting in stomach pain. However, the fetus is still small at 5 months, and usually does not have obvious symptoms and does not cause stomach pain. It is recommended that pregnant women with stomach pain should seek medical attention in time, through checking the ultrasound, fetal heartbeat and other conditions, to clarify the cause of the stomach pain, mainly to see if there is a pre-eclampsia. If there is any abnormality during pregnancy, it is recommended that the pregnant woman should consult a doctor in time for symptomatic treatment.