Low progesterone is usually rechecked once a week or ten days, and low progesterone during pregnancy can cause miscarriage aura. Low progesterone can cause vaginal bleeding, abdominal pain and other aura of miscarriage, so you should take progesterone capsules orally under the guidance of a doctor. The progesterone will not rise after the use of progesterone, which can easily cause the failure of birth control. The progesterone is low during pregnancy, you need to rest in bed, not strenuous activities, and can not eat cinnamon, hawthorn and other foods that are prone to abortion, not to mention the coitus during pregnancy, taking drugs to protect the fetus during regular ultrasound checks to see the embryo development.