Low progesterone may rise on its own, depending on the development of the embryo. Progesterone values are in a state of pulsation during pregnancy and may sometimes increase and sometimes decrease. If the embryo is developing well, the progesterone level will slowly rise as the pregnancy week progresses. However, if the embryo is not developing well, and if you strongly request to keep the baby, progesterone is routinely recommended for fetal preservation treatment, for example, you can take oral dydrogesterone tablets, 10mg/time, 3 times/day, continuously, and conduct a progesterone test around 7-10 days to see if the progesterone level is rising. If the embryo is developing well and the progesterone level is rising, you can slowly stop taking the tablets.