If you find that your period is delayed after having sex, it is important to rule out the possibility of pregnancy. The morning urine can be used to test for early pregnancy, and if two lines of the same color are found, it indicates pregnancy. If pregnancy is not detected by the morning and early pregnancy test, you can wait for 3-5 days and if you still do not have a period, it is recommended to take another morning and early pregnancy test to rule out the possibility of pregnancy. If you are not pregnant, you can take progesterone orally to induce menstruation, take 2 capsules once a day for 3 days, most of them will come in 3-7 days after stopping the medicine. If you find that you are pregnant after the early pregnancy test and want to continue the pregnancy, you can go to the obstetrics department for further examination. If you want to terminate the pregnancy, go to the gynecology department for the appropriate examination and then terminate the pregnancy.