The common medical name for great aunt is menstruation, and the menstrual cycle usually lasts around 28-30 days, and pregnancy can usually be detected after a delay of about a week in menstruation. The menstrual cycle is about 40 days long and you can test for pregnancy after the menstrual cycle has passed. Generally, if the menstrual cycle is regular, around 28-30 days, you can test for pregnancy with a delay of about a week. If the menstrual cycle is longer, around 40 days, this can only be tested for pregnancy after the menstrual cycle has passed. Usually, after the egg is discharged from the ovary, it enters the fallopian tube, and the sperm enters the uterine cavity through the cervix of the vagina, reaches the fallopian tube and combines with the egg, and the fertilized egg enters the uterine cavity under the peristaltic movement of the fallopian tube and the push of the fallopian tube cilia, and it is implanted in the uterine endometrium, and it takes about one week. During the implantation process, the trophoblast cells secrete human chorionic gonadotropin, which can be detected in the blood about 5-7 days after the fertilization of the egg, and can be detected in the blood of a woman with a normal menstrual cycle who has stopped menstruating, and can be detected in the blood, which is worthwhile and more accurate. It is recommended to go to the hospital in time, under the guidance of the doctor, to conduct relevant examinations to make accurate judgment.