If your period is delayed for 4 days after taking Eusemide, it may be a normal phenomenon after taking the drug, so there is no need to worry too much and you can continue to observe for 3 days. If your period is still coming for more than 7 days, you need to consider whether there is a mistake in the method of taking Eusebio or contraceptive failure, you need to promptly consult the relevant doctor for consultation and treatment. 1. Wrong method of taking Eusebio: If you do not take Eusebio orally according to the time of taking Eusebio, menstrual disorders will occur after taking it, which may lead to a delay of 4 days or even more than 7 days, so when taking Eusebio Therefore, you must follow the doctor’s advice to take oral medication, do not use the medication by yourself; 2, contraceptive failure: Although the contraceptive effect of Eusebio is as high as 99%, there are still cases of contraceptive failure, if the oral method of Eusebio is correct, but the menstrual period is delayed for more than 7 days, you need to be admitted to the hospital for relevant checks to see if you are pregnant. If you are pregnant, the estrogen and progesterone contained in Eusebio is the result of the body’s own hormonal modifications, which usually do not affect the quality of the embryo, so you can decide whether to continue the pregnancy according to your own wishes. If you choose to continue the pregnancy, you should have regular maternity checkups to ensure normal fetal development. If you do not want to continue the pregnancy, you can terminate the pregnancy by medical abortion or abortion under the guidance of your doctor.