1. Balanced diet: Pregnant women should ensure balanced nutrition, eat more vegetables, fruits, whole grains, beans, lean meat, fish, eggs and other foods, and avoid excessive intake of greasy, high-sugar and high-salt foods.
2. Appropriate exercise: Pregnant women can do appropriate exercise, such as walking and yoga for pregnant women, to keep healthy and contribute to childbirth.
3. Regular check-ups: The second trimester is an important period for Down's screening and B-ultrasound, so as to find and deal with possible problems in time.
4. Avoid contact with harmful substances: Pregnant women should avoid contact with harmful substances such as chemicals, radiation, tobacco and alcohol, so as not to affect the fetus.
5. Pay attention to psychological adjustment: Pregnant women may have psychological problems such as mood swings, anxiety and depression, so they should pay attention to psychological adjustment and seek professional psychological counseling when necessary.
6. Keep a good sleep: Pregnant women should ensure adequate sleep and avoid staying up late and overworking.
7. Avoid standing or sedentary for a long time: Standing or sedentary for a long time may lead to varicose veins of the lower limbs, so you should properly move your legs and change your posture.
8. Pay attention to personal hygiene: keep private parts clean and avoid infection.
The above are some basic precautions, and the specific situation needs to be decided according to the physical condition of pregnant women and the doctor's advice.