Early pregnancy mostly refers to the early pregnancy test, which can be detected as early as about 14 days after intercourse, and the time to detect pregnancy may vary somewhat due to individual differences in different women. Normally, a fertilized egg is formed within 24 hours after intercourse. Over the next few days, the fertilized egg gradually beds down and causes a rise in beta-HCG. Therefore, it is only after about 14 days after intercourse, when the blood β-HCG concentration reaches a certain value, that it is possible to detect pregnancy only by means of an early morning pregnancy test strip. The best way to detect pregnancy is to use morning urine. Early pregnancy test paper and other tests can only play an auxiliary diagnostic role, the final diagnosis, must be based on the results of the blood test in the hospital. If there is a delay in menstruation, you need to go to the hospital in time, under the guidance of the doctor to check.