If the progesterone is very low but there is no stomach pain or bleeding, it is recommended to do ultrasound, blood test for human chorionic gonadotropin HCG and estradiol to know the pregnancy situation, and supplement progesterone treatment under the guidance of the doctor. After pregnancy progesterone is very low but no stomach pain or bleeding, also can not indicate that the fetus in the uterus is well developed, to further go to the hospital to do ultrasound to see whether there is liquid dark area in the uterine cavity, check the gestational sac next to the liquid dark area is considered to be bleeding, just bleeding temporarily did not show vaginal bleeding. Through the ultrasound examination, everything is normal, need to further blood test HCG, estradiol, to know whether other values are normal, low blood HCG can be injected human chorionic gonadotropin to regulate, low estradiol with estradiol valerate tablets to regulate. Through the above examination, all aspects are normal, but the value of progesterone is relatively low, but also under the guidance of the doctor to supplement progesterone, oral progesterone, dydrogesterone tablets, intramuscular injection of progesterone to regulate the body’s normal value of progesterone will be conducive to the growth and development of the embryo. Progesterone is very low but there is no stomach pain or bleeding should also be further examination and treatment, the use of medication should be carried out under the guidance of a doctor, in order to avoid adverse effects.