If you usually have regular periods and your period does not come for more than 5 days, you cannot say that you are definitely pregnant. If you have a normal sexual life and you are not using contraception, you can go to a pharmacy and buy an early pregnancy test and test it with your morning urine, if the test paper shows two bars, it means pregnancy. If the test paper shows two bars, it means pregnancy. If the test paper shows two bars, one dark and one light, it means a weak positive test, which means pregnancy is possible. If you want to confirm whether you are pregnant or not, you can go to the hospital to have a blood test for human chorionic gonadotropin, if the value is elevated, it means that you are pregnant. If you are not pregnant, it may be caused by irregular menstruation. If your period is delayed for 7 days, it is normal, but if it does not come for more than 7 days, you can go to the hospital for an ultrasound examination to check the thickness of the endometrium to rule out ovarian pathology. After that, you can do a sex hormone test to see if there is an endocrine disorder. Because many women nowadays have a more stressful life, usually irregular work and rest, or have changed their living or working environment, it may lead to endocrine disorders, thus leading to menstrual disorders.