Nowadays, HCG and progesterone tests during early pregnancy have become a common program in some places, and many pregnant mothers are told that they have “low progesterone”, which is a big blow to the expectant parents and makes many sisters very depressed and torn. So what is the problem of low progesterone? Should we use progesterone to protect the fetus? Progesterone is essential for fetal development Progesterone, also known as progesterone, is a natural progesterone secreted by the corpus luteum of the human ovary. Progesterone begins to act on the endometrium during the second half of the menstrual cycle in non-pregnant women. Progesterone improves pregnancy reserve If a fertilized egg is compared to a seed, what happens next when progesterone is low? The Consensus on Luteal Support and Progesterone Supplementation states: Traditionally, in patients with preterm miscarriage, based on a full explanation of the etiology associated with the miscarriage and an account of the associated risks, the pregnant woman is advised to take rest and avoid emotional stress, while psychological treatment is given until the symptoms disappear. If the miscarriage cannot be preserved, we can only let nature take its course. There is no sufficient evidence to support that progestogen supplementation can reduce the chance of miscarriage in patients with pre-eclampsia. However, in practice, when should progesterone be checked if it is a case of a good pregnancy? There is no need to routinely check progesterone in a normal pregnancy. As mentioned earlier, if there is a miscarriage, most of the time it is due to problems with the embryo itself, and it is wise to eliminate it, in accordance with the laws of nature. However, if the symptoms described below occur, especially in the early stages of pregnancy, it is time to go to the hospital to seek help from the doctor, who will combine the results of the HCG, progesterone and B-ultrasound to determine whether the fetus is still developing normally so that it can be treated accordingly: one of the most common manifestations is vaginal bleeding, mostly accompanied by abdominal pain.