The high sensitivity of early pregnancy test paper is only in a specific period of time, the HCG concentration in the body is not high too early to test. If you have had sexual intercourse during the ovulation period and your period does not come on time within the regular time, you may be pregnant if it is delayed for more than a week. At this time, it is recommended to use early pregnancy test paper for high sensitivity and accurate results. The disadvantage is that the early pregnancy test can only detect pregnancy, but cannot determine whether the pregnancy is intrauterine or ectopic. It is advisable to cooperate with the obstetrics department of the hospital to give gynecological ultrasound examination for final determination.