How does pregnant women relieve hypoxia by themselves?

If pregnant women feel that they lack oxygen, they must pay attention to the environment where they are located. They must go to a well-ventilated and open place and try to prevent them from going to noisy places, such as supermarkets and markets. Too many people and bad air. If they are sleeping, it is best to take the left lying position, which is conducive to oxygen supply to the fetus. Pregnant women should maintain a comfortable mood, wear loose and comfortable clothes, and exercise properly. If it is not chest tightness and shortness of breath is very serious, do not be too nervous, conditional can also take oxygen every day, but do not exceed half an hour. If it is caused by heart disease or respiratory disease, it belongs to pathological reasons, and it is necessary to go to the hospital in time for treatment.