Low progesterone may cause abdominal pain. Low progesterone in pregnancy may cause abdominal pain and vaginal bleeding as a sign of preterm miscarriage or miscarriage. However, low progesterone is not a sure cause of abdominal pain. In some cases, although embryonic abortion occurs, the embryo is not expelled in the uterus and there may be no abdominal pain or vaginal bleeding, so low progesterone may only cause abdominal pain. The low progesterone is especially in the early stages of pregnancy, some pregnant mothers are too old, some have luteal insufficiency before pregnancy, this situation should be treated with timely progesterone supplementation, such as oral progesterone capsules or dydrogesterone tablets, but also intramuscular progesterone injection.