The level of progesterone in a woman’s body changes with the menstrual cycle, and there is a big difference between the values of progesterone in pregnant and non-pregnant women, so it is necessary to determine whether it is normal or not according to the specific situation. If it is the luteal phase, it is generally normal, but if it is any other period of time, it may be abnormal, and it is recommended to consult and treat under the guidance of a doctor. Progesterone is produced by the ovary, placenta and adrenal cortex, blood progesterone level in the normal menstrual cycle is very low in the follicular phase, the level of progesterone rises rapidly after ovulation, reaches a peak in the 6-8 days after ovulation, and then gradually declines to the level of the follicular phase in the 4 days before menstruation. Serum progesterone levels rise steadily with increasing gestation in pregnancy. The normal range of blood progesterone is as follows: follicular phase <3.18nmol/L, luteal phase 15.9~63.6nmol/L, early gestation 63.6~95.4nmol/L, mid-gestation 159~318nmol/L, late gestation 318~1,272nmol/L, and postmenopausal <3.18nmol/L. Each person's situation is different, so the reference range of values are different, it is recommended to go to the local hospital for further counseling.