Menstruation occurs when the uterine lining reaches about 1.2 cm. If the uterine lining reaches 1.5 cm and you have not yet had your period, you should first rule out pregnancy because the uterine lining will also thicken after pregnancy. It is recommended to use early pregnancy test to find out if you are pregnant. If the uterine lining reaches 1.5cm and you are not pregnant, you can drink a bowl of hot brown sugar water every day, which has the effect of inducing menstruation, and you will usually get your period after taking it for about 3 days. If there is still no menstruation, you can go to the hospital to do the appropriate examination, to understand the body’s hormone levels are normal, and then give the relevant treatment. If necessary, you can take progesterone orally to promote menstruation, 1 time / day, 2 capsules / times, for 3 days, 3-7 days after stopping the drug will come to menstruation.