A pregnancy test can usually be done on the 28th day of the menstrual cycle if the menstrual cycle is more consistent at 35 days. If a woman’s menstrual cycle is regular and she has sexual intercourse, she can go to the hospital for a pregnancy test on the 28th day of her menstrual cycle, mainly because a woman’s ovulation period is about 14 days before the onset of her next menstrual period, and the 21st day of the menstrual cycle is the ovulation period for a woman who is on her 35th day of menstruation. In the normal preparation for pregnancy after intercourse, the fertilized egg in the female uterus in general needs about 7 days to bed, so in about 28 days can be detected through the blood of the body whether pregnancy. Generally speaking, a positive test paper can be used to determine whether you are pregnant or not. If the preliminary judgment of pregnancy should go to the regular hospital for further examination to confirm the diagnosis, through the 31 days or 32 days after the menopause when the blood test HCG to determine whether the pregnancy, blood HCG is more sensitive than urine HCG sensitivity. Intrauterine pregnancy can also be confirmed by ultrasound, which reveals the presence of a gestational sac in the uterus. It is worth noting that if a woman’s body shows abnormalities or has an uncomfortable reaction, she should consult a doctor in a timely manner to clarify the cause of the disease and carry out treatment under the guidance of the doctor.