Progesterone tablets for 12 weeks of pregnancy can not be stopped directly, and the dosage should be gradually reduced until the drug is stopped. The main ingredient of progesterone tablets is a large amount of progesterone, which is mainly indicated for diseases with insufficient endogenous progesterone secretion such as endometriosis, progesterone deficiency caused by preeclampsia or habitual abortion. Progesterone is an important hormone for maintaining pregnancy. In early pregnancy, some women with luteal insufficiency have low levels of progesterone secreted by the corpus luteum of the ovary, which is insufficient to maintain the continuation of the pregnancy and requires supplemental progesterone. At 12 weeks, the placenta is formed, and the various hormones secreted by the placenta maintain the continuation of pregnancy, at which time the ovarian corpus luteum’s secretory function is no longer needed, so the intake of progesterone tablets can be gradually reduced at this time until the drug is discontinued. Sudden discontinuation of the drug can cause bleeding and affect the development of the fetus. If you want to stop the medication at 12 weeks of pregnancy, you should do so under the guidance of your doctor to avoid adverse consequences.