Low progesterone and no bleeding does not mean that everything is fine, we have to combine the specific situation to judge. If the progesterone is a little low in the early stages of pregnancy, there is no vaginal bleeding phenomenon, the embryo is well developed, generally not a big problem, pay attention to rest, closely review the progesterone situation, or can be taken under the guidance of the doctor or injected progesterone observation. The first stage of pregnancy progesterone is low more, even if there is no vaginal bleeding phenomenon will be harmful. Progesterone in early pregnancy is necessary to maintain pregnancy, progesterone is too low embryo can not get enough nutrient supply, there may be embryo stop developing and miscarriage phenomenon, there is no bleeding can not guarantee that the later will not be fetal arrest or miscarriage. According to the development of the embryo, progesterone should be given in a timely manner to protect the fetus, and the value of progesterone and the development of the embryo should be rechecked.