If you haven’t had your period for 37 days, you should first use an early pregnancy test to see if you are pregnant. If the pregnancy test does not show up, you should go to the hospital to check your blood for HCG and progesterone. In early pregnancy, the hormone level in the blood is still relatively low, so it may not be detected by urine test, but it may be detected by blood test. The hormone level in the blood of ectopic pregnancy is also low, and the hormone level grows slowly, so it cannot be detected by urine test, but it may be detected by blood test, and it cannot be detected by ultrasound. If the blood test shows that you are pregnant, you should retest your HCG and progesterone 24 hours apart to see how your hormone levels are increasing and whether they have doubled. If they have doubled, the pregnancy is late, that is, because the pregnancy is short and the time to conception is short due to late ovulation. If it has not doubled, it may be an ectopic pregnancy.