Taking progesterone tablets may cause side effects, such as gastrointestinal reactions, such as loss of appetite, breast pain, dizziness, headache, weight gain and other reactions, and prolonged use may affect liver function and cause abnormal liver function. Progesterone tablets are most commonly used for menstrual regulation and fetus preservation treatment, and should be taken according to the advice of the doctor. If you do not have a period after 14 days, you need to check whether there is a possibility of pregnancy. If you are on birth control treatment, take the medication as prescribed by your doctor, pay attention to rest, avoid sexual intercourse and strenuous exercise, and pay attention to review after birth control.