However, there are still some precautions when flying during pregnancy, as follows: 1. Flying in early pregnancy is easy to aggravate pregnancy reaction and cause miscarriage, so try to avoid flying in early pregnancy;

2. In the second trimester, the fetus is relatively stable and the placenta has been formed. If the placenta is well developed and the fetus is normal, it can fly in the stable period of pregnancy, but the absence of clear complications does not mean that flying is very safe. Generally speaking, the flight should not exceed 4 hours, and always wear a seat belt on the plane, because accidents may occur during long-distance flight, and sitting in a posture for a long time will cause great pressure on the waist of pregnant women;

Flying in the third trimester is not allowed by airlines. Most airlines allow pregnant women to fly before 32 weeks. After 32 weeks of pregnancy, pregnant women should try to avoid flying to avoid premature water breakthrough or placental abruption due to huge impact.