Low progesterone but high HCG is unsafe. If low progesterone occurs during pregnancy, it may lead to preterm miscarriage or premature birth, so it is important to go to the hospital for examination in time. If the low progesterone situation has not improved, it is recommended to take progesterone or birth control pills under the guidance of a doctor in time to increase the progesterone in the body, and can also take food therapy to regulate, usually eat more food containing more progesterone. If the low progesterone persists after a period of pregnancy and is accompanied by various conditions such as bleeding in the pubic area and abdominal pain, it is recommended to go to the hospital for infusion treatment, which can be carried out by progesterone injection and other drugs, and at the same time, it is necessary to rest in bed and not to move around a lot in order to slowly raise the progesterone and avoid serious consequences.