When you are 38 weeks pregnant with a hard and tight stomach, you should pay attention to rest, relax, reduce activities, go to the hospital in time to improve the ultrasound, fetal heart monitoring and other tests, oxygen can be used to alleviate the symptoms, and get ready for labor. 38 weeks of pregnancy, the fetus is full-term, at any time may enter the stage of labor. When the stomach is hard and tight, if there is no regularity, it may be a false contraction symptom, at this time, you should relax, reduce activities, avoid excessive exertion, go to the hospital in a timely manner to improve the fetal heart rate monitoring and obstetric ultrasound, if the examination is normal, you can continue to observe, but also through the inhalation of oxygen to alleviate the symptoms. If there are regular contractions, such as once every 5 to 10 minutes, lasting about 35 seconds each time, consider the possibility of preterm labor, should immediately consult the doctor, improve the vaginal diagnosis, to determine whether the mouth of the uterus is open, prepare the necessary supplies for labor, and wait for delivery in the hospital. If there is severe pain in the stomach and refuses to be pressed, it is necessary to be alert to uterine rupture, and the diagnosis should be clarified immediately, and if necessary, cesarean section should be performed to terminate the pregnancy.