There is no absolute high or low value of HCG in the 5th week of pregnancy, but the main thing is to observe whether the value of HCG is elevated by testing and if it doubles every other day, it is normal. If there is a doubling of the value every other day, it is normal. If the HCG value does not rise significantly or decreases instead of rising, it means that the embryo is not developing well or is stillborn, and prompt medical attention should be sought. Clinically, the progesterone value in the 5th week of pregnancy is usually greater than 25 nmol/l, which is within the normal range, and if the progesterone is low, there is a possibility of miscarriage. If low progesterone occurs, it may clinically manifest as lower abdominal pain and vaginal bleeding, which should be treated with progesterone or oral progesterone or dydrogesterone in time.