If a woman is able to combine with sperm in time to form a fertilized egg after ovulation, she can cooperate with her doctor to draw blood to check the blood HCG value about 10 days after ovulation. If there is a significant increase, it indicates pregnancy, and this is one of the earliest and most accurate tests for diagnosing early pregnancy. If the sperm is not encountered in time after ovulation and does not combine with the sperm in time to form a fertilized egg, it will gradually lose its vitality after 36 hours and does not have the ability to be fertilized, so it will not become pregnant. If you take a blood test 10 days after ovulation, the blood HCG value will not exceed the normal range. Whether a woman is pregnant or not, she needs to confirm ovulation through ovulation test strips or ultrasound, and arrange for coitus in time, so that the egg can combine with the sperm in time to form a fertilized egg, and then she can get pregnant successfully.