Generally, progesterone supplementation is not needed after 12 weeks, but there will be individual differences. A moderate level of progesterone during early pregnancy is conducive to embryo implantation and maintenance of pregnancy. It is secreted by the corpus luteum up to the 6th week of pregnancy, and by the placenta after the 8th to 10th week of pregnancy. As low progesterone increases the risk of miscarriage, progesterone and other medications should be given as prescribed by the doctor to preserve the pregnancy. However, after 12 weeks of pregnancy, the level of progesterone secreted by the placenta is more stable, so asymptomatic patients do not need to supplement progesterone. After 12 weeks of pregnancy, as most of the pregnant women have basically disappeared, you can adjust your diet under the guidance of your doctor, and increase the amount of foods rich in protein, iron, calcium, vitamins and other nutrients, such as dairy products, eggs, poultry, fish, meat, and fresh vegetables and fruits. You should also follow the doctor’s instructions and go to labor and delivery on time to ensure the safety of mother and baby during pregnancy.